Questions Asked on
February 13, 2011

  1. chemistry

    Consider a gas that has a molar mass of 100.21 g/mol. What mass of this gas would occupy a 150 mL container under a pressure of 1.00 atmosphere and a temperature of 25 degrees centegrade?

    asked by nancy
  2. chemistry

    Consider a gas that has a molar mass of 100.21 g/mol. What mass of this gas would occupy a 150 mL container under a pressure of 1.00 atmosphere and a temperature of 25 degrees centegrade?

    asked by nancy
  3. chem

    I am still having a little problem with my original question. However, this is what I have done so far. I am not sure what to do with the density of the solution of 0.78 g/mL. The answer I came up with is 5.47 mol/kg. I found the density of the water in

    asked by paula
  4. Math

    Can someone please help me to answer the following question? The question below has four choices, but only one correct answer. Could you please help me with the correct answer for this question? Thank you in advance. Question # 1. Find the slope of the

    asked by Dave
  5. spelling

    what word ends in -let and has the same meaning as starlet?

    asked by mark
  6. Algebra

    How many solutions are there to the equation -0.3x^2+25x+16=0, how would you come to this conclusion?

    asked by Tish
  7. science

    If the density of a piece of wood and the density of water are exactly the same, how much of the piece of wood remains above the water if it has a thickness of 5cm?

    asked by Logan
  8. chemistry

    If the concentration of O2 in water at 1.00 atm and 20 degrees celsius is 9.2 g/l, the concentration of O2 at 20 degrees celsius is how much in g/l?

    asked by Anonymous
  9. Math

    Can anyone help work these problumns out step by step? 11x-37=x+23 10p-26=p-44 -13x+5=4x-6 -7x+13=4x-7 11x+5=17 -11x+13=-42 -15y+26=-19 5x-13=9x+15 6q-14=11q-19 4(-2x-5)=29 12(2-5x)=(3x-1) 9x+2=15x-10 19q+4=7q-3 6(2x+1)=9(2x+6) -7(x-3)=8(4-5x)

    asked by Scotty
  10. science

    A front end of modern cars are designed to crumple in the event of head-on-collision. (a) why are cars now designed to crumple on impact?

    asked by Myk
  11. physical science

    A front end of modern cars are designed to crumple in the event of head-on-collision. (a) why are cars now designed to crumple on impact?

    asked by Myk
  12. Chemistry

    An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative percentages of the isotopes?

    asked by Ashley
  13. Chemistry

    An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative percentages of the isotopes?

    asked by Ashley
  14. Tangu

    how long does it takes for 1000 pounds to melt in 12 feet of snow at 39 degrees

    asked by Gregory
  15. chemistry

    what is the effect of the absence of the catalyst on the outcome of the thermal decomposition of KCLO3

    asked by jasmin
  16. physics

    A ball of mass m = 0.75 kg is thrown straight upward with an initial speed of 8.9 m/s. Plot the gravitational potential energy of the block from its launch height, y = 0, to the height y = 5.0 m. Let U = 0 correspond to y = 0. Determine the turning point

    asked by Bob
  17. physics

    A ball of mass m = 0.75 kg is thrown straight upward with an initial speed of 8.9 m/s. Plot the gravitational potential energy of the block from its launch height, y = 0, to the height y = 5.0 m. Let U = 0 correspond to y = 0. Determine the turning point

    asked by Bob
  18. science

    If Aluminum has .22 K/cal and Iron has .12 kcal and each of them has 1.10kcal. Which would be higher in degerees? (Would it be Iron or Aluminum)

    asked by nikka
  19. Chemistry

    How much energy in jouls is released as 100 g of alluminim (specific heat 0.900 j/g- degrees celcius) cools from 100.0 degrees celcius to 30.0 celcius?

    asked by Anonymous
  20. science 6 helppppppppppppppppppp

    two identical batteries are connected to different circuit. explain how it is possible for the batteries to supply different amount of power? is it because the another batteries might have more power??

    asked by lee
  21. social studies

    show how the wheel metals and tools are important even today in our daily life.draw and write

    asked by mohsin
  22. chemistry

    calculate pH of 0.1M NH4^- of 100ml of that solution?

    asked by kabelo
  23. chemistry

    calculate pH of 0.1M CH3COOH of 100ml of that solution?

    asked by kabelo
  24. math

    Elise used 2/9 of piece of string to tie a parcel and another 1/4 of the string to tie a box. What fraction of the string was left?

    asked by ruel
  25. math

    Snow spent 5/8 of her money on books and another 1/6 of her money on stationeries. What fraction of Kathy’s money was left?

    asked by rowena
  26. math

    please can anyone help me to gget the answer of this question,please help me solve thie word problem below is the question......Snow spent 5/8 of her money on books and another 1/6 of her money on stationeries. What fraction of Kathy’s money was left?

    asked by rowena
  27. math

    please kindly help me to get the answer for this . Elise used 2/9 of piece of string to tie a parcel and another 1/4 of the string to tie a box. What fraction of the string was left?question below.........

    asked by rowena
  28. biochemistry

    What are the three chemical reasons for the large negative energy of hydrolysis of phosphoric acid anhydride linkage for compounds such at ATP, ADP, and pyrophosphate?

    asked by Anonymous
  29. MBA

    How might you specify a simple random sample of 100 first year students at European School of Economics?

    asked by Hala
  30. Ststistic

    for abrar ul haq show the rate of an adult pass is rs 20 more than the children pass. when a company sold 50 adult passess and 200 children passess , the amount collected re. 2250. find the rice of an adult pass.

    asked by Rida
  31. math

    Each side of a rhombus is 5 inches long and the shorter diagonal is 4 inches. Find the angle of the rhombus and the longer diagonal.

    asked by jessa
  32. Math

    A deli offers its cheese sandwichs with various combinations of mayo, lettuce, tomatos, pickles, sprouts. 11 types of cheese are available. How many different cheese sandwichs are possible. * You can only use one type of cheese on each sandwich...

    asked by Roxanne
  33. English

    Can you recommend me internet sites where I can both listen to and read the news in English? I need to practise the vocabulary used when reporting news, especially that concerning car accidents. Here are some more sentences I'm not sure of. 1) John

    asked by Mike
  34. math

    i don't get scale draings how do you work it out?

    asked by kate
  35. physics

    what is the relation between resultant and equilibrant?

    asked by kristine L. grace
  36. Precalculus

    how do you put the polar equation r^2(sin2u)=6 into rectangular form?

    asked by Kristen
  37. Physics

    Two cars are travelling in the same direction along a street. Car A collides with Car B and they lock together. Calculate tgeur velocity after the collision. Before: Car A: mass of 1001kg. Velocity of 12m/s Car B: mass of 1200kg Velocity of 10m/s After:

    asked by Laureen
  38. science

    The turntable below is spinning. Which coin has a greater speed than the penny? a. the dime b. the quarter c. The penny is moving faster than both of the other coins. c. All three objects are moving at the same speed. pennyis closest to center dime in

    asked by Lex
  39. science

    A machine has a mechanical advantage of 2. This means its output force is _____. a. 0.5 times greater than the input force b. 2 times smaller than the input force c. 2 times greater than the input force d. 2 times more efficient than the input force

    asked by donna
  40. Maths - Calculus

    Can anyone help with this...I need to find the derivative of the functions below. If possible please show working so I can try and understand? f(t) =3-t^4 and g(t)=sin(4t) Then using the Quotient Rule differentiate the function k(t) 3-t^4/ sin(4t) (0

    asked by Christine
  41. math

    please can anyone kindly help me to get the answer of this word problem,i would like someone to help me please for the word problem below...... Pat and Eric bought a large pizza that has 12 slices.Jane and Eric ate all the pizza .If Jane ate 4/6 slices,

    asked by rowena
  42. math

    Venus begins a new year every 225 days. Earth begins a new year every 365 days. If both planets begin a new year on the same day, how many days will pass befor that happens again.

    asked by carl
  43. maths

    how many revolution will a wheel having 56cm diameter make to cover a distance of 11km?

    asked by abdul
  44. math

    please help to get the answer for this word problem and it would be my great gratitude and the question below.. Alex has 50 ping pong balls that he bought in sets of 6. How many sets of balls does Alex have?( Hint: express answer as a mixed number)

    asked by dely
  45. chemistry

    Calculate the formula mass of each of the following compounds: A)H2O3 B)AI2I6 C)C10H22 D)C6H8O6 E)K2CR2O7 F)C56H88O2

    asked by twynna
  46. chemistry

    Calculate the percentages of C,H,and O in C24H44O22.

    asked by twynna
  47. chemistry

    Calculate the empirical formula of each compound from the mass-composition data given below. A)41%N and 59%O B)45%Na,23%P and 32%O

    asked by twynna
  48. CHEMISTRY

    How many grams are there in 2 moles of each of the following? A)Xe2 B)C6H12O6 C)CH3COOMg

    asked by twynna
  49. chemistry

    Calculate the number of moles and atoms. A)64 gm of O2 B)58.9 gm of CI C)90.5gm of (HN4)2SO4 D)243gm of Mg2

    asked by twynna
  50. math

    hope that someone can help me to solve this solving problems below.... Discounts : a. for the total discounts that the following customers can avail and the Net price for that they have to pay. 2. Today is the 35th Anniversary sale of Mudrah House of

    asked by dely
  51. chemistry

    Calculate the number of grams in each of the following: A)0.5 moles of F2 B)10.25 moles of H2 C)11.3 moles of BaSO4

    asked by twynna
  52. chemistry

    How many moles of KBr are there in 35.8ml of a 0.172M solution?

    asked by twynna
  53. chemistry

    How many grams of NaOH are there in 2.5L of a 0.343M solution?

    asked by twynna
  54. math

    i appreciate someone can help me this solving problems god will always be with u to give good health and wealth as well questions below thanks a lot.... i. A business man bought her wife a Mudrah spa kit on credit. He also bought her 18yr old daughter a

    asked by dely
  55. chemistry

    what volume of a 0.34M MgCI2, solution is required to make 250ml of a 0.10M solution by dilution?

    asked by twynna
  56. chemistry

    A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a volume of 125L?

    asked by twynna
  57. chemistry

    What is the molar concentration of calcium hydroxide that has 0.185g solute in 100ml solution?

    asked by twynna
  58. chemistry

    Concentrated nitric acid is 16M. What volume of nitric acid must be diluted with distilled water to prepare 5L of 0.1M nitric acid?

    asked by twynna
  59. Physics-Please check my answer

    If I had the old-fashion camera that had a focal length of 35mm(0.035m) and I take a picture of a person 6 m away, how far does the film need to be from the lens to record a clear image? I know that the equation is 1/f = 1/d(object) + 1/d(image) so would I

    asked by Robert O.
  60. math

    is anyone can answer this fraction below. .Rename these improper fractions as mixed numbers: 16/5 18/6 19/4 24/5 sorry if it is line suppose but i typed slash pls.understand thanks

    asked by oscar
  61. child day care management

    Q; During a science activity,you overhear a colleague asking a group of children, ''how many diffrent ways you think of to build a bridge that will hold this weight?'' This conversation is an example of A. a divergent Question B. a convergent question

    asked by Alex
  62. chemistry

    Which solutions has more sodium (assuming all Na dissociates in all cases) .50 M NaCl or 5%(w/v) CH3COONa)

    asked by Hewey
  63. child day care management

    Q; some of the children in your care are overweight. The most immediate and appropriate think you can do abouth it is A.provide snacks,but only as a reward for good behavior B.talk to the parents about a special diet C. provide more opportunities for

    asked by Alex
  64. child day care management

    O;children usually behave in acceptable ways when they A.know the rules B.feel good about themselves C.are scolded for misbehavior D.like the caregiver My answer would be B but also can be D??? What you think??? Thank you!

    asked by Alex
  65. child day care management

    Q; the best strategy for encouraging social competence with a group of school-age children is to A. reassure the students about positiv behavior B.punish students for antisocial behavior C. use external rewards D.modeling good social skills To me D make

    asked by Alex
  66. computer science

    In the TCP/IP model, the best path through the network is determined at the ______________ layer. In the OSI model, the same function is carried out at the ______________ layer. A network access network B network access transport C internet network D

    asked by Sue
  67. business

    what are some of the operations management that can help bring manufacturing back to the U.S? How can a focus on quality improve manufacturing?

    asked by james
  68. child day care management

    Q;one of the most important functions of a child's peer group is A.serving as a replacement for the parents B. providing opportunities for competition C.fostering love and understanding D. teaching about the world outside the family my answer is D is that

    asked by alex
  69. Maths - Calculus

    Can anyone help with this...I need to find the derivative of the functions below. If possible please show working so I can try and understand? f(t) =3-t^4 and g(t)=sin(4t) Then using the Quotient Rule differentiate the function k(t) 3-t^4/ sin(4t) (0

    asked by Christine
  70. chemistry

    the thermal decompostion of 26.4g of CaCo3 produced10.6g calcium and 3.17g carbon. calculate the mass of oxygen produced in this reaction.

    asked by Mary
  71. algebra

    (2xsquared -1)+(3x-4)+(xsqaured-3x+3

    asked by Anonymous
  72. Health

    is it bad to run on the elliptical everyday?

    asked by Mary Sue
  73. math

    The bell rings for school at 8:30 a.m. Elia must be there 15 minute before the bell. The trip to school takes 35 min. When should Elisa leave for school.

    asked by Anonymous
  74. math

    Jay is 150 cm tall. He can reach 55 cm above his head. A ball is thrown 268 cm in the air. How many centimeters must Jay jump to cathch it?

    asked by joe
  75. math

    The shadow of a 6-ft man measures 5 ft, and his son's shadow is 12. Explain how to find the height of the son.

    asked by fran
  76. sociaL studies

    what skills do you need to be a cobbler in colonial times

    asked by jil
  77. algebra

    x=1=x-3 x+3 x+5

    asked by may
  78. child day care management

    Q; Melissa plays with the same four girls every day. She has a lot of energy,is independent,and is concerned about what her friends think.Melissa kikes soccer and baseball and takes pleasure in beting up the boy's team. Melissa is most likely to be ____

    asked by alex
  79. algebra

    x^2-3+x=4/3=-5xx^2-9

    asked by may
  80. Math

    The cost for a 30-second ad during the 2010 Super Bowl was $2.8 million. Assuming the rate per second to be constant, what was the average cost per ad that was broadcast during the Super Bowl in 2010? Express your answer as a whole number to the nearest

    asked by Bria
  81. Math

    Using nonperfect square method,find the square root of 418 correct to two decimal places, showing workings.

    asked by Ebun
  82. logic

    How to provr with a truth table that "Neither A nor B is lying"

    asked by Hesdy
  83. u.s history

    What was the three-Fifths compromise

    asked by Anonymous
  84. AIU

    Internet has become a very popular research tool for patients to research different health care conditions and possible treatment options. Now, more than ever, patients are becoming more informed of their medical conditions from sources other than their

    asked by mary
  85. religious studies

    Why was the Sabbath changed from Saturday to Sunday?

    asked by Anonymous
  86. Math

    find the slope of the line passing through (10,0) and (0,3)and find the slope of the line passing through (0,-4) and (-6, 7)

    asked by slope ofthe line passing through (10,0) and (0,3)
  87. geography

    in which country khmer rouge establish a brutal regime?

    asked by jay
  88. chem

    Formal charge: kind of confused? why cant i get -1? tinypic . com /view.php?pic=14buuti&s=7 ok in class we did this. and for O FC= 6-4-3=+1 but S FC = -1 (I get 6-4-1= +1) which is wrong. what am i doing wrong? i solve by doing: group # - total (bonds and

    asked by jessie
  89. Calculus

    find the derivative of the function. f(x) = − 1/7(x^-7-x^14)

    asked by Anonymous
  90. child day care management

    Q; Bruno has been asked to list all of the use for a paper clip.This is an example of A;convergent thinking B;scaffolding C;conservation D;divergent thinking My answer is D but it might be B pls hellp me scaffold- support system that supports children as

    asked by alex
  91. english II

    Answers for telling an associate and close friend that she should pay more attention to her work responsibilities, or management will fire her.

    asked by vienessa
  92. Math

    How do you find the LCM and the GCF for 72x and 150y?

    asked by renee
  93. earth science

    what makes scientists think that the ozone layer is disappearing?

    asked by kristina reingand
  94. Physics

    A mass m is traveling at an initial speed of v0 = 25.0 m/s. It is brought to rest in a distance of 62.5 m by a force of 15.0 N. The mass is? Could you just enlighten me on what formula to use please.... little lost although I think the answer is 37.5kg am

    asked by Femfatal
  95. physics

    In a distant planet, a freely falling object gains speed at a steady rate of 25 m/s during each 1.2 seconds of fall. The gravity acceleration there is: 122 m/s2 0.05 m/s2 30 m/s2 22 m/s2 5 m/s2 20.8 m/s2

    asked by Anonymous
  96. geometry

    Suppose the dimensions of a rectangle with a perimeter of 21 inches are doubled. What is the perimeter of the new rectangle in inches?

    asked by Moriah
  97. chemistry

    Formal charge: kind of confused? why cant i get -1? i just want to know if the way im solving it, if its completely wrong. i have a test soon. please help! tinypic . com /view.php?pic=14buuti&s=7 ok in class we did this. and for O FC= 6-4-3=+1 but S FC =

    asked by jessie
  98. Chemistry

    The vapor pressure of water is 23.8 torr. at 25 degrees C. Determine the mass of glucose (molar mass 180g/mol) needed to add to 500g of water to change the vapor pressure to 23.1 torr.

    asked by Lucho
  99. Math

    Need Help Please Solve the linear equation 2x/5-x/3=3

    asked by Roxanne
  100. Finance

    This morning you purchased a stock that will pay an annual dividend of 1.90 per share next year. You require a 12 percent rate of return and annual dividend increases as 3.5 percent annually. What will be your capital gain be on this stock if you sell it 3

    asked by Angel
  101. Chem I just need someone to check my answer

    arrange the following compounds in the order of increasing polarity HF, H2SE, N2, H2s I believe that the answer is H2Se < H2S < N2 < HF Is that correct?

    asked by Kathy R
  102. College Algebra

    Compute the average rate of change of f(x) = 9x 2 + 2 from x 1 = 4 to x 2 = 7. Round your answer to two decimal places.

    asked by Chelsea
  103. MATH

    Find the center of the radius (x+2)^2 +y^2=64

    asked by James
  104. chemistry

    A backpacker carries 3.25 L of white gas as fuel for her stove. How many pounds does the fuel add to her load? Assume the density of the gas is 0.97 g/cm^3.

    asked by Tonya
  105. Math

    Write an equation of the line satisfying the given conditions Parallel to the line y=-4x+3 and a y intercept of -5 Please help I am really confused

    asked by Ariana
  106. Statistics

    The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 4.0 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will

    asked by Andy
  107. Math Help

    Find the distance between the two points (8,4) and (18,28) Thanks a bunch !!!!

    asked by Isabella
  108. chemistry

    A bag contains a mixture of copper and lead BB's. The average density of the BB's is 9.87 g/cm^3. Assuming that copper and lead are pure, determine the relative amounts of each kind of BB.

    asked by Tonya
  109. Math/Graphing

    Give the equation of the line that is perpendicular to the line y=x+6 and passes through the point (0,-4)

    asked by David H.
  110. child day care management

    Q; children usually behave in acceptable ways when they A.know the rules B.fell good about themselves C.are scolded for misbehavior. D. like the caregiver my answer is D,i know A make a lot of sense,but is not A. please hellp tks

    asked by alex
  111. physics

    A positive charge of 5.10 C is fixed in place. From a distance of 3.70 cm a particle of mass 6.80 g and charge +2.60 C is fired with an initial speed of 70.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before

    asked by Ana
  112. statistics

    It is well known that the heights of individual American men are normally distributed with mean 70 inches and standard deviation 2.8 inches. The Central Limit Theorem states that if n men are randomly chosen, then their average height will also be normally

    asked by LISA
  113. Math

    find the other endpoint of a line segment with the given midpoint and one endpoint 0,0 and 4,-2

    asked by Stacey
  114. chemistry

    Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks. How should we properly report the temperature?

    asked by Tonya
  115. physical science

    What formula can be used to find the surface area on the rate of reaction, when adding rennies or cal-C-vitas to vinegar?

    asked by Simmy
  116. Finance

    An investor purchases a 10-year U.S. government bond for $800. The bond's coupon rate is 10 percent and,? at time of purchase, it still had five years remaining until maturity. If the investor holds the bond until it matures and collects the $1,000 par

    asked by marie
  117. Physics

    A 2.50- object is moving along the axis at 1.60 . As it passes the origin, two forces and are applied, both in the direction (plus or minus); .The forces are applied for 3.00 , after which the object is at the point , . What is F2?

    asked by jahil
  118. English

    I really need you to re-word these sentences as I don't know much about vocabulary on the environment.Thank you very much! 1)I‘m quite environment-friendly. I have three containers at home to sort my rubbish. One is for paper, one for plastic and one for

    asked by Mike
  119. Chemistry

    A 13.0-g sample of ice at -13.0°C is mixed with 112.0 g of water at 80.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g · °C, respectively, and

    asked by Katrina
  120. math

    The the Hanson's have reduced the average number of hours they watch tv each day from 5.5 hrs. in march to 2.5 hrs. in june. Find the rate of change in average number of hrs. they watch tv each day. I think the answer is rate = 5.5 - 2.5/3 rate = 3/3 rate

    asked by andrea
  121. science

    I'm in 5th grade and I need a cool, unusual science fair project. I have 3 days to do this. It has to be a question with a variable, not a demonstration. HELP!

    asked by Zoe
  122. algebra

    x+1= x-3 x+3 x+5

    asked by may
  123. Geometry

    Anyone know how to write a proof for this? - The perpendicular segment from a point to a plane is the shortest segment from the point to the plane. Thanks

    asked by Shadow
  124. algebra

    5-a-9 =a^2-3 a+4 a+4

    asked by don
  125. calculus

    Consider the curve given by the equation y^3+3x^2y+13=0 a.find dy/dx b. Write an equation for the line tangent to the curve at the point (2,-1) c. Find the minimum y-coordinate of any point on the curve. the work for these would be appreciated i don't need

    asked by Little
  126. Physics-bobpursley or drwls please check if possib

    If I had the old-fashion camera that had a focal length of 35mm(0.035m) and I take a picture of a person 6 m away, how far does the film need to be from the lens to record a clear image? I know that the equation is 1/f = 1/d(object) + 1/d(image) so would I

    asked by Robert O.
  127. algerbra

    Miranda’s Financial aid stipulates that her tuition not exceed $1500. If her college charges a $125 registration fee plus $475 per course, what is the greatest number of courses for which she can register?

    asked by Anonymous
  128. physics

    A plastic ball has a volume of 300 cm3 and a mass of 30 g. What fraction of the ball's volume will float above the surface of a lake of fresh water?

    asked by shannon
  129. math

    simplify 9qt9pt

    asked by niki
  130. math

    x^2 + y^2 - 8x -2y -3 = 0 the points S and T lie on the circumference of the circle. M is the midpoint of the chord ST. Length of Centre C to M is 2. whats the length of ST??

    asked by Jack
  131. PHYSICS

    Assuming a total mass of 95kg (bicycle plus rider), what must be the cyclist's power output to climb the same hill at the same speed?

    asked by TEE
  132. calculus, limits, l'hopital

    Find the limit as x->0 of (2-2cos(x))/(sin(5x)) Mathematically I got 2/5, but on the graph it appears to be 0.

    asked by Kate
  133. science

    How do you make a labeled station model?

    asked by lyndsey
  134. Chemistry

    Write a net ionic equation for Hg(C2H3O2)2 + NaI

    asked by Jim
  135. Calculus

    If a function f(x) is continuous, then what can be said about the value of the following limit lim-->2 [f(x) +4x]

    asked by Janet
  136. math - 5th grade

    Insert parentheses to make sentence true: 8^2 - (-9) + (-10) * 8 = 88 (8^2 is 8 squared, just couldn't type it in the traditional way).

    asked by Sally
  137. chemistry

    Suppose that a compound Z had a partition coefficient of 8 in ether-water. If 10g of z was dissolved in 100mL of water, and if the water solution was extracted with two 100 mL portions of ether, answer the following questions a) what is the total amount of

    asked by carol
  138. math 5th grade

    Insert parentheses to make sentence true: 32 + (-4) - (-5) * 4 = 13

    asked by Sally
  139. Computer Science

    Q1: Write (militaryTime t AMPM), where t is an integer from 1 to 12 (inclusive) and AMPM is either 0 to represent morning or 1 to represent afternoon/evening. The function will convert the hours of the day from standard to military time. (militaryTime 5 0)

    asked by Ronaldo
  140. algebra

    courtney walks three laps around a 1/4 mile track. How many feet does she walk? if 1mile = 5280ft

    asked by sharon
  141. helpppp science 7

    what role do insulators play in preventing electric shock?

    asked by kim
  142. Pre-Calculus

    How do I make a table for f(x)= [[x-1]] ? It's a greatest integer function..

    asked by Ana
  143. business

    Research the VISA website. After reviewing of all the documents you can find on the web and in libraries, write a 3-page response to the following questions

    asked by kate
  144. chemistry

    22. Choose the best description for a solid held together by London forces. A. This substance melts at -30 °C to give a liquid that does not conduct electricity. B. This substance melts at 650 °C and both the solid and liquid phases conduct electricity.

    asked by Kathy R
  145. Math

    Write a rule for each linear function x--4,-2,0,2 f(x)-4,2,0,-2

    asked by Debby
  146. Marketing

    Select a company that produces a product that you use and with which you are familiar. For the company to make decisions about developing new products and attracting new customers, it must rely on marketing research. These decisions feed into the

    asked by Ms. J
  147. Clinical Procedures

    What is one of the most used piece of laboratory equiptment? A. Refridgerator B. health hazard C. MRI machine D. X-ray machine my answer is A. but i cant find the answer anywhere in my book. Please help!

    asked by Jessica
  148. Math

    We're supposed to be using the "substitution method"? So, what would the answer be for: 6x-y=-4; 2x+2y=15 (_,_)

    asked by Sarah
  149. Pre-A;lgebr

    Write a rule for the linear function with slope m and y-intercept b. m= -1/3, b= -2

    asked by Help
  150. chemistry

    An aqueous solution of nacl has a mole fraction of 0.21. What is the mass of NaCl dissolved in 100.0 mL of solution?

    asked by Ashley
  151. Clinical Procedures

    What is used to improve the quality of a blood specimen? a) an anticoagulant b) additives c) a tube with a red stopper d) a tourniquet my answer is c. please help!

    asked by Jessica
  152. statistics

    Please help with the following question. If the following equation, y is the weight in pounds that a person can bench-press and x is the amount of lifting done per week on their newly begun exercise program: y = 100+1.2x How much lifting exercise must this

    asked by Tee
  153. english

    recommending the purchase of excess equipment to use up your allocated funds before the end of the fiscal year so that your budget won't be cut next year.

    asked by minnie
  154. Chemisrty

    what is the molality of a 0.075m of ethyl alcohol in water at 25 degrees celcius. Assume the density of the solution at such low concentration is equal to that of water at 25 degrees celcius, 0.997g/ml

    asked by Kate
  155. math

    hi to all teacher who wants to help me for this word problem to get the answer and thanks a lot god bless u all. question below.. Perk spent 1/4 of his money on a food and another 3/10 of his money on a drink. a. What fraction of his money did he spend in

    asked by oscar
  156. science

    what could be a home example of a cell membrane

    asked by bina
  157. Physics

    What is the minimum height of a roller coaster in terms of "r" such that you can easily complete the loop- de- loop safely?

    asked by Amy
  158. math-logs

    1. logaB = 2 and logbC = 4, evaluate logcA *the lowercase letters are bases ie. log(base a)B 2. solve for x: (log(base 2)x))^3 = log(base 2)x

    asked by randy
  159. math

    hi to all of you teachers i hope you will help me to get the answers for this question below.. and thanks god bless you. Perk spent 1/4 of his money on a food and another 3/10 of his money on a drink. a. What fraction of his money did he spend in total? b.

    asked by oscar
  160. MATH

    Describe the advantages and disvanteges of seeing a rule for a function rather than listing a function values in a table

    asked by Help
  161. finance

    Cascade Mining ($28Mil Assets) has an estimated beta of 1.6. The company is considering the acquisition of Hanson Welding ($42 Mil assets) that has a beta of 1.2. Cascade last paid a dividend of $1 per share 2010. In 2007, the Cascade paid a dividend of

    asked by teresa
  162. Anonymous

    Find the area of the region shared by the circle r=2 and the cardioid r=2(1-cosx) (that x is supposed to be theta, and as you can see it's in polar mode)

    asked by Calculus
  163. physics

    you are walking into a circus tent and you notice the circus ringleader twirling a 150 g gold pocket watch from a chain that is 40.0 cm long. the period of rotation is about one second. a) determine the tension in the gold chain when the watch is at the

    asked by Amy
  164. math

    please can u help me for my homework thanks a lot the question is below.. A container is 1/3 full of water and 1/4 full of oil. What fraction of the container is empty?

    asked by edwin
  165. PHYSICS

    The work-energy theorem states that a force acting on a particle as it moves over a ______ changes the ______ energy of the particle. A)distance / potential B)distance / kinetic C)vertical displacement / potential D)none of the above

    asked by SHILA
  166. Calculus

    On what intervals is the function f(x)=x^7−7x^6 both decreasing and concave up?

    asked by Alyssa
  167. English

    I still have some doubts about a summary I made of Macbeth's plot. I hope you can have a look at it, too. I included various alternatives. Please, tell me if they are all possible. 1)The play opens with the news that Macbeth has succeeded in defending

    asked by Mike
  168. math

    how do you solve the exponential equation, 12^x = 14^3x? If someone could show me step by step I would greatly appreciate it. thank you! :)

    asked by Rachel
  169. PHYSICS NEED HELP FAST

    a raft is consttructed of wood having a density of 6000kg/m3. the surface area of the bottom of the raft is 5.7m2, and the volume of the raft is .60m3. when the raft is placed in fressh water having a density of 1000kg/m3, how deep is the bottom of the

    asked by ricki
  170. Math

    A problem was posed as here is half the letter H a height of 8 centimeter with a width of 2 centimeters and the extension of 2 centimeters height and one centi -meter width. Please finish the letter H on graph paper and compute the perimeter. The answer is

    asked by Doretta
  171. FP/101

    What are some future consequences of borrowing too much debt? How do you plan on repaying your student loans? What is one positive thing you can do to keep your student loans under control?

    asked by pooh
  172. PHYSICS NEED HELP FAST

    a 1.0kg beaker containgin 2.00kg of oil with a density of 916kg/m3 rests on a scale. a 2.0kg block of iron is suspended from a spring scale and completly submerged in the oil, find the euilibrium readings of both scales.density of iron 7860.

    asked by ricki
  173. Physics

    A 4.2-kilogram block sliding down a ramp from a height of 4.5 meters above the ground reaches the ground with a kinetic energy of 33 joules. The total work done by friction on the block as it slides down the ramp is approximately:

    asked by Ashley
  174. math

    Find the missing numbers to complete the patterns. Some are arithmetic and some are geometric. State the commom differences or common ratio. 1) 1,2,___,___,___,32 2)800,80,8,0,8,0.08,___,____ Some tricky ones that don't follow the "rules."

    asked by Elizabeth O'Loughlin
  175. Math

    Write a rule for m= 3/4 ; (6,4)

    asked by Leahhh
  176. Statistics

    Please help with this problem. Really having a hard time. How many runs are there in the following series of free throws? HMMHHMHMMHHHHHMMHHMMHMHHHMHHHHMMMHH

    asked by Tee
  177. Calculus

    Find the quadratic polynomial g(x)=ax2+bx+c which best fits the function f(x)=7x at x=0, in the sense that g(0)=f(0), and g'(0)=f'(0), and g''(0)=f''(0).

    asked by Alyssa
  178. business

    If Generall Cereal Common Stock cividendwas .79 in 20000 and the last dividend paid was in 2010 $1.55, what is the annual growth rate.

    asked by teresa
  179. math

    The product of two numbers is 50. If you divide the larger number by the smaller number you get 2. What are the numbers?

    asked by anonymous
  180. Physics

    A driver of a car going 90.0km/h suddenly sees the lights of a barrier 40.0 metres ahead. It takes the driver 0.75 seconds before she applies the brakes, and the average acceleration during braking is -10.0 m/s squared. Does the car hit the barrier?SHow

    asked by Steph
  181. math

    hi to all teachers kindly please help me to solve this word problems thanks and god bless u always.question is below.i need for my homeworkpls. q.Saltly has a piece of cloth. She used 1/3 of the cloth to make a pillow cover and another 4/7 of the cloth to

    asked by maria
  182. chemistry

    Thallium -208 has a half-life of 3.053 min. How long will it take for 120g t decat ot 7.50g

    asked by Anonymous
  183. calculus

    LEt f and g be continous functions with the following properties i. g(x) = A-f(x) where A is a constant ii. for the integral of 1 to 2 f(x)dx= the integral of 2 to 3 of g(x)dx iii. for the integral from 2 to 3 f(x)dx = -3A a find the integral from 1 to 3

    asked by Little
  184. finance

    If general cereal common stock dividend was 0.79 in 2000 and the last dividend paid was 1.55 in 2010, what is the annual growth rate.

    asked by teresa
  185. statistics

    I need to prove this σ(hat)^2(x,y) = (1/n) Σ (Xi - X (bar) ) Yi using σ(hat)^2(x,y)= (1/n) Σ (Xi - X(bar)) (Yi-Y(bar)) and X(bar)= (1/n) Σ Xi σ(hat)^2 (x,y) is the estimator of covariance

    asked by Kevin
  186. Statistics- I'm stuck and its due tonight

    In a particular hospital, 6 newborn babies were delivered yesterday. Here are their weights (in ounces): 112, 96, 109, 126, 99, 106 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your

    asked by Rachal
  187. Please check my solution bob pursley or drwls if a

    If I had the old-fashion camera that had a focal length of 35mm(0.035m) and I take a picture of a person 6 m away, how far does the film need to be from the lens to record a clear image? I know that the equation is 1/f = 1/d(object) + 1/d(image) so would I

    asked by Robert O.
  188. Algebra

    A rectangular sheet of aluminum foil is 50 centimeters long and 20 centimeters wide, and weighs 5.4 grams. Find the thickness of the aluminum foil in centimeters.

    asked by Anonymous
  189. PHYSICS

    A 69.0 firefighter climbs a flight of stairs 22.0 high. How much work is required?

    asked by mar
  190. Chemistry

    How many grams of potassium carbonate are needed to make 0.200 L of a 2.50M solution?

    asked by Hannah
  191. algebra

    The length of a rectangle is 3 meters more than its width.If the area is 108 sqaure meters What are the length and width?

    asked by Crystal
  192. Physics

    A charge of 7.00 10-9 C and a charge of -4.50 10-9 C are separated by a distance of 60.0 cm. Find the position at which a third charge, of 13.0 10-9 C, can be placed so that the net electrostatic force on it is zero.

    asked by Shannah
  193. math

    A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft longer than the hieght that reaches on the side of the bridge.Find the horizontal and vertical distance spanned by this brace

    asked by Nick
  194. English

    Do you think music or television has more positive on teens today? I need a second opinion

    asked by Taylor
  195. english

    I look for areas of interest when people speak. How would you rate your self and where are your strongest points and where can you improve? answers: always, frequently, occasionally or never.

    asked by minnie
  196. algebra

    Completely factor the expression 28x^2-196xy+343y^2

    asked by Janelle
  197. Physics

    A small utility car is pulled along a straight section of railroad tracks by a rope. When the ropepulls the car for 10 seconds the car reaches a final speed, after starting from rest, of 8m/s. Now the situation is modified slightly so that the rope pulls,

    asked by John
  198. math

    i am sorry ms.sue i just changed because i ashamed that i always posted question on my homework and i afraid that anyone might not help my homework because of keep on posting but i really thanks to you and i hope you will help me to solve the problem i

    asked by maria
  199. English

    I need to think of a question to write about for my inquiry paper and I need a question so I can answer but I can't think of it. It has to be about advertising and need to connect with communication.

    asked by Jenny
  200. physics

    What is the work done by a car's braking system when it slows the 1500-kg car from an initial speed of 96 km/h down to 56 km/h in a distance of 55 m? I have tried to work this one and can't seem to get the answer.

    asked by merri
  201. math

    how do i find the rule of a piecewise linear function?

    asked by anonymous
  202. chemistry

    what is the maximum percent yelid theoratically possible? can this value be atually be exceeded ? how do you account this?

    asked by amanda
  203. math

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your

    asked by samantha
  204. Math/Algabra

    The perimeter of a triangle is 102. side b is twice as long as side A. and side C is three less than side B.. how long is each side.

    asked by Randy
  205. Physics

    A duck on a pond paddles 20 m [36˚ N of E] and then paddles another 60 m[25˚E of S]. Determine the duck’s total displacement.

    asked by Emily
  206. Chemistry help

    The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent is the only species in a closed flask at 35°C and is present in both liquid and vapor states. the system pressure is 760mmHg. Determine the mole fraction of

    asked by Anonymous
  207. Math

    Shawna thinks that 8x2=17. What number pattern shows that she is not correct?

    asked by Joe
  208. algebra

    factor completely 27x^2y+90xy^2+75y^3

    asked by Dedrick
  209. Math

    List the x-intercepts for the function f(x)=ln |x-1|

    asked by Michelle
  210. Math

    List the x-intercepts for the function f(x)=ln |x-1|

    asked by Michelle
  211. Math

    List the x-intercepts for the function f(x)=ln |x-1|

    asked by Michelle
  212. chemistry

    calculate the necessary amounts of solutes and solvent to make a 4l bottle of antifreeze that will have a 35 degree change in the freezing point of water. soultes are: Al2(SO4), KBr) and Mg(NO3)2.

    asked by redgy
  213. Algebra

    Susie has designed an exercise program for herself. One part of the program requires her to walk between 25 and 30 miles each week. She plans to walk the same distance each day five days a week. What Is the range of miles that she should walk each day

    asked by Gabby
  214. Algebra

    Susie has designed an exercise program for herself. One part of the program requires her to walk between 25 and 30 miles each week. She plans to walk the same distance each day five days a week. What Is the range of miles that she should walk each day

    asked by Gabby
  215. algebra

    I really need help writing this out An overnight delivery service accepts packages of up to 165 inches in length and girth combined. (Girth is the distance around the package.) A package has a fixed girth of 53 inches. Determine (in terms of an inequality)

    asked by Zaire
  216. college Trig

    To find the distance from the house at A to the house at B, a surveyor measures the angle ACB, which is found to be 70°, and then walks off the distance to each house, 50 feet and 70 feet, respectively. How far apart are the houses? feet

    asked by Anonymous
  217. math (calculua)

    find the volume of the solid of revolution generated by rotating the graph of y=5lnx about the y-axis between y=0 and y=15

    asked by anna
  218. math (calculua)

    find the volume of the solid of revolution generated by rotating the graph of y=5lnx about the y-axis between y=0 and y=15

    asked by anna
  219. math (calculus)

    A cap of a sphere is generated by rotating the region about the y-axis. Determine the volume of this cap when the radius of the sphere is 5 inches and the height of the cap is 1 inch.

    asked by ellen
  220. Physics II

    When an electron moves from A to B along an electric field line, the electric field does 3.94 x 10^-19 J of work on it. What are the electric potential differences (a) Vb - Va, (b) Vc - Va, and (c) Vc - Vb?

    asked by Scott
  221. math

    You flip a coin and toss a 1-6 number cube what is the probabilty of getting a 5 and tails

    asked by sue
  222. general psychology

    how may psychology be understood as both an art and a science?

    asked by ashley
  223. math

    Use lattice multiplication to find the product. 52 × 67

    asked by anonymous
  224. Math

    Is 30 a multiple of 5? How do you know?

    asked by Joe
  225. Alegebra2

    1. Given f(x)=3^(x-2), simplify f(x+1)-f(x) into an expression of the form (a)(3^x) 2. Given the function f(x)=e^(x) ln x, write the equation(s) for any and all asymptotes. If the graph has no asymptotes, state that fact.

    asked by Arthur
  226. math (calculua)

    find the volume of the solid of revolution generated by rotating the graph of y=5lnx about the y-axis between y=0 and y=15

    asked by anna
  227. math (calculus)

    A cap of a sphere is generated by rotating the region about the y-axis. Determine the volume of this cap when the radius of the sphere is 5 inches and the height of the cap is 1 inch.

    asked by ellen
  228. chemistry

    An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?

    asked by Hector
  229. math-solving for x with e

    1.) e^(2x) - 3e^(x) - 4 = 0 2.) e^(1-2x) ((e^(3x+6) - e^(2x)) = 0

    asked by Amanda
  230. math

    Stacy multiplied 5x9 and said the answer was 44. What two patterns could you use to show that the answer is not correct?

    asked by Joe
  231. chemistry

    An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?

    asked by Hector
  232. precalculas

    f(x)=2-9x find f^-1(6)

    asked by katrina
  233. Science

    On any given day, why does the photoperiod vary throughout the world? I have no idea about what they're asking? :S

    asked by Kobe
  234. ap chem

    Analysis of a reaction mixture showed that it had the composition 0.417 mol/L N2, 0.539 mol/L H2, and 0.127 mol/L NH3 at 800 K, at which temperature Kc = 0.278 for N2(g) + 3H2(g) *) 2NH3(g) . Calculate the reaction quotient Qc .

    asked by Anonymous
  235. Math

    What is the length of a rectangular lot that has a perimeter of 1400 m and a width of 100 m?

    asked by bob
  236. geometry

    to the nearest integer how long is the diagonal square with the side of 12

    asked by benjamin
  237. english

    Is this the correct style? The report was thorough. Furthermore, it saved the department several hundred dollars.

    asked by SMH
  238. math

    under which transformation is the area of a triangle not equal to the area of its image? i think the answer is dilation

    asked by pavleen
  239. Chemisdtry - Lewis Structures (check + help)

    Draw Lewis structures for each of the following ion: CO3 (2-) I tried this method below, i do not know where am i going wrong, please help me understand this concept for ions. Valence Electrons 4e- + 18e- = 22e- Noble gas Config 8e- + 24e- = 32e- Total

    asked by Farah
  240. ap chem

    At a certain temperature, the equilibrium constant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration of SO3 would be in equilibrium with 0.250moles of SO2 and 0.578 moles of O2 in a 1.00 liter container at this temperature? Note:

    asked by Anonymous
  241. ap chem

    At 350 K, Kc = 0.142 for the reaction 2BrCl(g) *) Br2(g) + Cl2(g) An equilibrium mixture at this temperature contains equal concentrations of bromine and chlorine, 0.067 mol/L. What is the equilib- rium concentration of BrCl? Answer in units of M.

    asked by Anonymous
  242. calculus

    LEt f and g be continous functions with the following properties i. g(x) = A-f(x) where A is a constant ii. for the integral of 1 to 2 f(x)dx= the integral of 2 to 3 of g(x)dx iii. for the integral from 2 to 3 f(x)dx = -3A a find the integral from 1 to 3

    asked by alex
  243. chemistry

    7. At pH 7.4 a weak organic acid with a pKa of 6.4 would be ionized at what percent?

    asked by ryan
  244. Chemistry

    Identify the Lewis acids and bases in the following reactions and write the products. a) O || C + AlCl3 --> / \ H3C CH3 b) H N + BF3 --> / \ H3C CH3

    asked by jessie
  245. math

    If I place $300.00 in an account that accumulates 3%, how much is it worth in 30 years?

    asked by Joanne
  246. Physics

    At t=0, a wave disturbance has the waveform that is shown in a figure. The wave has a velocity of 500.0 m/s to the left. What's the values for k and ω if the wave equation is to be written in the form: y(x,t)=A cos(kx±ωt+φo). What is the value for k,

    asked by Alan
  247. math

    which transformation is the image not congruent line reflection translation rotation dilation

    asked by pavleen
  248. Math

    If I have two mowers that travel at a rate of 250 ft per minute and one has a 48 inch cut and the other is a [blank] cut. How much faster could I cut a yard that is 200 foot by 300 foot with the larger mower.

    asked by Crystina
  249. psychology

    what is the design, purpose and the limits of an I.Q test?

    asked by Tim
  250. math

    Five socks, colored blue, brown, black, red, and purple, are in a drawer. How many combinations of three socks can be randomly selected from the drawer?

    asked by sam
  251. Science

    I am writing a paper on environment and I wanted to know what all the environmental risks are out there. Also what type of environmental risks could one be exposed to based on their actions/ way they react and behave? (To clarify, not you environment)

    asked by Stefina
  252. math

    (x+ 6)(x-2)

    asked by pavleen
  253. English

    I forgot to include these last statements. Thank you. 1)Lady Macbeth gives the king’s guards a lot to drink and in the middle of the night Macbeth kills Duncan with the knife of one of the soldiers. 2) The next morning the murder is discovered and the

    asked by Mike
  254. math

    (x-8)(x-4)

    asked by pavleen
  255. Logarithms

    1. solve for x: (log(base 2)x))^3 = log(base 2)x 2. solve for x: log(base 3) x-1 = log(base 3) 18

    asked by Sara
  256. algebra

    completetly factors the followin expression 4a^2-12ab+9b^2

    asked by Lisa
  257. college Trig

    Solve this equation on the interval 0 θ < 2π. Round your answer(s) to two decimal places. 2 sin θ + 3 = 2 (smaller value) (larger value)

    asked by Anonymous
  258. math

    (x-3)(x+9)

    asked by pavleen
  259. math

    My problem I have involves a method that requires using the quadratic equations that comes from India. Here the problem that I have to solve : x to the second power plus 12x minus 64 equals 0 I need someone to walk me through each step to arrived to the

    asked by Dave
  260. Chemistry

    what happens when NaCl(s) is dissolved in water? (1)Cl-ions are attracted to the oxygen atoms of the water (2)Cl-ions are attracted to the hydrogen atoms of the water. (3)Na+ions are attracted to the hydrogen atoms of the water. (4)no attractions are

    asked by Tina
  261. math

    Find all solutions of the equation and express them in the form a + bi.x^2 − 16x + 65 = 0

    asked by sam
  262. math

    The length of a rectangle is 3 meters more than its width.If the area is 108 sqaure meters What are the length and width?

    asked by crystal
  263. math

    (x-2)(x-7)

    asked by pavleen
  264. Math-Logarithmic function

    Find the equation of a logarithmic function whose graph has x-intercept 8, a vertical asymptote at x=0, and which passes through the point (1/2,4)

    asked by Sara
  265. Math-Logarithmic function

    Find the equation of a logarithmic function whose graph has x-intercept 8, a vertical asymptote at x=0, and which passes through the point (1/2,4)

    asked by Sara
  266. Chem

    which of the following is not soluble ? (1)sodium chromate (2)lead(II)iodide (3)lithium hydroxide (4)ammonium sulfate don't understand, please help.

    asked by Jackson
  267. history

    what were the conflicts and sources of tension leading up to ww1?

    asked by isaiah
  268. Math Trivia! :)

    Three friends arrive at an In late one night and rent a room for $30 (each of them contribute $10). THe next mornnig, the Innkeeper decides to give them a $5 discount because of a leak in the roof. Since he can't split the $5 evenly, he gives each of the

    asked by Dawn
  269. math

    (7x+4)(2x+4)

    asked by pavleen
  270. math

    (7x+4)(2x+4)

    asked by pavleen
  271. physics

    how does mass energy relate to the hydrogen bomb? i can't find anything that simply explains this to me and i need6 it for a powerpoint presentation tomorrow please help.

    asked by i need help please
  272. English

    Why are the Southern Colonies economy almost based completely on Farming? Is the question written right or sould it be re worded.

    asked by Told
  273. english

    Hi, for my English assignment I have to find an ad and analyze it and answer a few questions about it. Can someone on here please help me find an ad online that I could use for my assignment? Thank you.

    asked by y912f
  274. math

    a cube is painted blue,then cut into 27 smaller cubes.how many of the smaller cubes have only two side painted/ggggggggggg

    asked by chrisopher
  275. Chemistry - Lewis Structures (check + help)

    I am asked to draw lewis strcutures of the following molecules and ions SF6, BrF5, XeF4, PF5 and IF4-. I have to follow a specific format to draw them, below is an example of SF6, where am i going wrong in the table, since i am not getting six bonds, nor

    asked by Farah
  276. math

    a chart for a minimum of 5, max 20, median of 10 and the mode of 15

    asked by olivia
  277. math

    draw pattern block with a total of 22 sides

    asked by bob
  278. maths

    a box of red,blue and green pencils contains 20 in all.there are 6 times as many blue pencilas green ones,and fewer rd pencils than blue ones. how many red pencilsare in he box

    asked by chrisopher
  279. algebre

    a flower bed is the shape of a triangle with one side twice the length of the shortest side and the third side is 30 ft more than the shortest side. find the dimentions if the perimeter is 102 ft.

    asked by tina
  280. 6th grade science project for PsyDAG

    Thank You for answering PsyDAG. You asked what my hypothesis was. Here it is--Raising the temperature of the vegetable oil and thyme will increase the velocity of the mixture's movement. So is the question you responded to earlier, or actually late

    asked by Reed
  281. TRIG

    Solve this equation on the interval 0 θ < 2π. Round your answer(s) to two decimal places. 2 sin θ + 3 = 2 (smaller value) (larger value)

    asked by Anonymous
  282. PHYSICS NEED HELP FAST

    a 1.0kg beaker containgin 2.00kg of oil with a density of 916kg/m3 rests on a scale. a 2.0kg block of iron is suspended from a spring scale and completly submerged in the oil, find the euilibrium readings of both scales.density of iron 7860.

    asked by ricki
  283. physics

    a raft is consttructed of wood having a density of 6000kg/m3. the surface area of the bottom of the raft is 5.7m2, and the volume of the raft is .60m3. when the raft is placed in fressh water having a density of 1000kg/m3, how deep is the bottom of the

    asked by ricki
  284. AP Calculus AB

    the temperature of a 10m long metal bar is 15 degrees celcius at one end and 30 degrees celcius on the other end. Assuming that the temperature increases linearly from the cooler end to the hotter end, what is the average temperature of the bar? Also,

    asked by Destinyyy
  285. Chemistry

    What environmental risks in one exposed to based on their own personal actions and behaviours; not the environment around them (ie. school, work, home).

    asked by Stefina
  286. math

    A man borrows $50,000 towards the cost of a house. Compound interest is charge on the loan at 125 per annum. He agrees to pay back the loan in 25 equal installments, at yearly intervals, the first repayment being made exactly 1 year after the loan is taken

    asked by jen
  287. algebra

    how to solve this 2.3 + 7.7 x 2 =

    asked by lisseth
  288. Physics

    At the other end of what would come to be known as the Roman Empire, Parthian (Persian) archers were able to discourage pursuers by firing backwards from the back of a galloping horse-the famous "Parthian shot." a. If the speed of the arrow vB the

    asked by Eduardo
  289. Social studies

    I need pictures of fashion from the the 13 colonies. Could someone give me a good web site for this. I need the picture of fashion for the New England colonies, middle colonies and Southern Colonies. Please help me

    asked by Told
  290. AP Calculus AB

    A traffic engineer monitors the rate at which cars enter a freeway onramp during rush hour. From her data, she estimates that between 4:30 pm and 5:30 pm, the rate R(t) at which cars enter is given by: R(t)=100(1-0.00012t^2) cars per minute, where t is

    asked by Destinyyy
  291. Finite Mathmatics

    Two cards are drawn from a well-shuffled deck of 52 playing cards. Let X denote the number of aces drawn. Find P(X = 2).

    asked by Dustin
  292. Physics

    How many rpm's will a 2'' Nd45 sphere do spinning at 340.29 m/s. Please help me!! =(

    asked by Haley
  293. PRECALCULAS

    Solve this equation. Give a general formula for all the solutions using k to represent your arbitrary integer. sin θ = 1/2 θ =

    asked by Jesse
  294. math

    A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft longer than the hieght that reaches on the side of the bridge.Find the horizontal and vertical distance spanned by this brace

    asked by nicholas
  295. Physics

    How many rpm's will a 2'' Nd45 sphere do spinning at 340.29 m/s. Please help me!! =(

    asked by Haley
  296. science

    explain how an magnitude of 8.0 earthquake could be classified as a low intensity

    asked by Anonymous
  297. geometry

    find the area of a trapezoid whose diagonals are each 30 and whose height is 18.

    asked by alison
  298. math

    A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft longer than the hieght that reaches on the side of the bridge.Find the horizontal and vertical distance spanned by this brace

    asked by nicholas
  299. algebra

    on a graph starting at 0 and sloping up to 480 on total # of words typed and 16 time in mins. Hannahs typing ability Kerry can type the same # of words in half the time. a)what rate does Hannah type? b)what rate does Kerry type? c)How many words can Kerry

    asked by andrea
  300. algebra

    The ticket office makes $5 profit each evening ticket sold and $3 on each matinee ticket sold. The ticket office wants to sell at least 50 evening tickets per week and at least 40 matinee tickets per week. Its goal is to earn at least $250 profit in sales

    asked by ankita
  301. chem need assistance

    7. At pH 7.4 a weak organic acid with a pKa of 6.4 would be ionized at what percent?

    asked by ryan
  302. algebra

    The ticket office makes $5 profit each evening ticket sold and $3 on each matinee ticket sold. The ticket office wants to sell at least 50 evening tickets per week and at least 40 matinee tickets per week. Its goal is to earn at least $250 profit in sales

    asked by ankita
  303. physics

    A positive charge of 4.10 C is fixed in place. From a distance of 3.70 cm a particle of mass 6.80 g and charge +3.60 C is fired with an initial speed of 80.0 m/s directly toward the fixed charge. How close to the fixed charge does the particle get before

    asked by Ana
  304. chem

    7. At pH 7.4 a weak organic acid with a pKa of 6.4 would be ionized at what percent?

    asked by ryan
  305. math

    WHAT IS 60X30 LOL WAT

    asked by bianca
  306. U.S History

    Which of the following caused a split in the womens's suffrage campaign? a.Alice Paul's aggressive strategy b.Carrie Champan Catt's "winning plan" c.The decision to press for a constitutional amendment d.world war 1

    asked by Ashley
  307. chemistry

    7. At pH 7.4 a weak organic acid with a pKa of 6.4 would be ionized at what percent?

    asked by ryan
  308. economics

    Suppose you wish to invest X dollars in a bank account which pays 5% per year. You want to use this account to pay for costs that appear each year, starting with year 15. The amount you have to pay in year 15 is 276.71 and then the payments grow at a rate

    asked by Rachel
  309. allgebra ll

    solve 3x=8=3x2 by completing the square

    asked by cam
  310. Natrual science

    A boat loaded with scrap iron floats in a swimming pool. When the iron is thrown overboard, the pool level will?_____________________.

    asked by twin 1028
  311. physics

    The figure below shows four charges located at the corners of a square with sides of length a = 8.0 cm. If the charges q1, q2, q3, and q4, are all 4.0 Coulomb, then:

    asked by jg
  312. physics

    The figure below shows four charges located at the corners of a square with sides of length a = 8.0 cm. If the charges q1, q2, q3, and q4, are all 4.0 Coulomb, then: find the x and y components

    asked by jg
  313. english

    from book geroge owell shooting an elephant since orwell quandary is largely his own fault, he is confessing his weakness. how does he enlist the readers sympathy?

    asked by rita
  314. Social Studies

    How did the breakdown of the feudal economy of the Middle Ages lead to the emergence of capitalism? and also What economic institutions became the foundations of the early capitalist economy?

    asked by Jon
  315. chemistry

    7. At pH 7.4 a weak organic acid with a pKa of 6.4 would be what percent ionized.

    asked by ryan
  316. Chemistry

    How could tell a copper (II)sulfate solution from lead (II)nitrate or sodium sulfite if the solutions were not labeled ?

    asked by Jackson
  317. english

    from book george shooting an elephant what did the elephant symboilize?

    asked by rita
  318. Business Communication

    You have four reasons for saying "no." Two of them are very strong reasons, one has a tiny loophole and one is very weak. In your message you should: (Points: 5) include all four reasons. omit the very weak reason and use the other three. use only the two

    asked by Chloe
  319. Math Trivia

    I asked this question before but the website given to me didn't really help :( Three friends arrive at an In late one night and rent a room for $30 (each of them contribute $10). THe next mornnig, the Innkeeper decides to give them a $5 discount because of

    asked by Dawn
  320. algebra

    Find the slope of each of the three line segments. Between which two points is the slope the largest? 0 to 3 to 6 to 9 not a straight line.

    asked by andrea
  321. OChem

    If the limonene reactant described in question 2 is composed of a single enantiomer, how many stereoisomers of the product will be formed in the reaction? If there are more than one stereoisomers what would their relationship be? Question 2: Suppose a

    asked by Kaval
  322. COM/155

    My assignment is to write a television show review. I am to Bold adverbs, and underline adjectives. I think I found them all, what do you think?

    asked by Mark
  323. math

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your

    asked by sam
  324. Calculus

    f(t)=-4.9t^2+25t+3 meters what is the average velocity during the first two seconds? find the instantaneous velocity at t=2

    asked by Emily
  325. Geography 7

    What is the Green Revolution?

    asked by BFF
  326. math

    a tank is in the shape of a triangular prism. If the triangular base has an area of 116 square feet, and the tank is 30 feet tall, how much water would the tank contain when it is full?

    asked by Anonymous
  327. Physics

    a 9v battery is in series with a 10 ohm resistor, a 20 ohm resistor, and a 30 ohm resistor. What is the power absorbed by the 10 ohm resistor?

    asked by Bobby
  328. Social Psychology

    Could some one please help me with this assignment. I am really confused about this. Here is what I have to do: Write 200 to 300 words applying critical thinking to determine whether an internal or external locus of control is more effective in various

    asked by Mandy
  329. Chemistry

    which of the following is not soluble ? (1)sodium chromate (2)lead(II)iodide (3)lithium hydroxide (4)ammonium sulfate is it 2, im not sure.

    asked by Jackson
  330. PHYSICS NEED HELP FAST

    a 1.0kg beaker containgin 2.00kg of oil with a density of 916kg/m3 rests on a scale. a 2.0kg block of iron is suspended from a spring scale and completly submerged in the oil, find the euilibrium readings of both scales.density of iron 7860.

    asked by ricki
  331. Geometry

    the radius of the circle PB=5cm, diameter AC=10 cm. Find line segment which is part of triangle BPC with an acute right angle.

    asked by Kay
  332. geometry

    Assume there are 2 similar polygons, whose scale factor is 4:5. If the larger polygon has an area of 30 units squared, what is the area o the smaller polygon?

    asked by Mark
  333. Chemistry

    what is an example of a substance that has both ionic &covalent bonds & where are these bonds formed.

    asked by jess
  334. Gegraphy 7

    Who has practised rice-fish farming?

    asked by Princess
  335. calculus

    Evaluate the limits without using a calculator. Justify all steps in the solutions. lim x-->0 x^7cos(3/x)

    asked by Janet
  336. chemistry

    As AgNO3 dissolves, what change occurs in the temperature of the solution?

    asked by Anonymous
  337. derivatives

    Explain how a long stock and long put strategy equals the cash flow from a long call strategy.

    asked by Josh
  338. math

    In this equation 4(x^2 – 8x) = 4(13), what would the coefficient of x^2 be in this case? Would this be correct 4x1=4? If not, what would the correct answer be?

    asked by Dave
  339. algebra

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your

    asked by sam
  340. algebra

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your

    asked by sam
  341. English

    Is this sentence correct? I sat down with him and helped him with the layers of the earth worksheet. Or do I need to take out the before layers

    asked by Thomas
  342. general chemistry

    Calculate the de Broglie wavelength (in pm ) of a hydrogen atom traveling 445 m/s.

    asked by soso
  343. physics

    A child pulls on a wagon handle at an angle 37° above the horizontal with a force of 45 N. If the wagon accelerates at 8.1 m/s2 horizontally, what is the mass of the wagon? Assume frictional forces are negligible.

    asked by anonymous
  344. general chemistry

    An X-ray photon of wavelength 0.948nm strikes a surface. The emitted electron has a kinetic energy of 979 eV. What is the binding energy of the electron in Kjol/mol ?

    asked by soso
  345. Business Communication

    You are writing to a reader who favors a different solution than the one you recommend. Which of the following is MOST likely to persuade the reader? (Points: 5) Describe your reader's solution first, explain why it won't work, and then go on to describe

    asked by Chloe
  346. general chemistry

    A metal whose threshold frequency is 9.02×1014 s-1 emits an electron with a velocity of 7.11×E5 m/s when radiation of 1.26×1015 s-1 strikes the metal. Use these data to calculate the mass of the electron

    asked by soso
  347. A U

    1. Question : Since Jessica’s participation in local politics increased significantly after she joined her school’s political science club, it is clear that her involvement in that club led her to take an interest in politics. The argument above is

    asked by Critical Thinking Quiz
  348. general chemistry

    An electron has an uncertainty in its position of 527 pm .What is the uncertainty in its velocity?

    asked by soso
  349. general chemistry

    An electron traveling at 2.1×E5 m/s has an uncertainty in its velocity of 7.98×E4 m/s. What is the uncertainty in its position?

    asked by soso
  350. Chemistry

    A sulfur oxide is 50.0% by mass sulfur. This molecular formula could be what?

    asked by Kortney
  351. algebra

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your

    asked by sam
  352. chemistry

    Molarity of the solution that results when 71.3 g silver nitrate is dissolved in enough water to give a final volume of 757 mL.

    asked by Anonymous
  353. chemistry

    Molarity of the solution that results when 71.3 g silver nitrate is dissolved in enough water to give a final volume of 757 mL.

    asked by Anonymous
  354. Physics

    At the other end of what would come to be known as the Roman Empire, Parthian (Persian) archers were able to discourage pursuers by firing backwards from the back of a galloping horse-the famous "Parthian shot." a. If the speed of the arrow vB the

    asked by Eduardo
  355. geometry

    A rhombus has a diagonals of length 4 and 10. Find the angles of the rhombus to the nearest degree.

    asked by Anonymous
  356. Ms. Sue

    Ms. Sue, as you know Im working on the diaries of the immigrant experience. What Id like to know is that how did pioneers start businesses? My person has lots of grain, and so I could start a business with that, be a grain merchant, but how does this

    asked by Sara
  357. Math

    The area of a rectangular playground is 2,700 ft2. The length is 3 times the width.What are the dimensions of the playground?

    asked by David
  358. geometry

    A rectangle is 80 cm long and 20 cm wide. Find, to the nearest degree, the acute angle formed at the intersection of the diagonals.

    asked by c
  359. geometry

    Trapezoid ABCD has height 4, BC=5, and AD and BC are perpendicular. Find the area of the trapezoid.

    asked by sally
  360. calculus

    The problem is lim --> 2 for g(x) which is 2((x-2/(squareroot x)-2)) I just substituted 2 in for x and 2((2-2)/(squareroot 2)-2) = 0 This doesn't look right. It seems like I'd need to try something different. Can someone tell me if it's right or wrong? And

    asked by Janet
  361. geometry

    Trapezoid ABCD has height 4, BC=5, and AD and BC are perpendicular. Find the area of the trapezoid.

    asked by sally
  362. calculus

    The problem is lim --> 2 for g(x) which is 2((x-2/(squareroot x)-2)) I just substituted 2 in for x and 2((2-2)/(squareroot 2)-2) = 0 This doesn't look right. It seems like I'd need to try something different. Can someone tell me if it's right or wrong? And

    asked by Janet
  363. calculus

    The problem is lim --> 2 for g(x) which is 2((x-2/(squareroot x)-2)) I just substituted 2 in for x and 2((2-2)/(squareroot 2)-2) = 0 This doesn't look right. It seems like I'd need to try something different. Can someone tell me if it's right or wrong? And

    asked by Janet
  364. Chemistry

    which of the following is insoluble ? (1)calcium chloride (2)ammonium phosphate (3)barium sulfate (4)potassium chromate its 2, right ?

    asked by Jackson
  365. calculus

    The problem is lim --> 2 for g(x) which is 2((x-2/(squareroot x)-2)) I just substituted 2 in for x and 2((2-2)/(squareroot 2)-2) = 0 This doesn't look right. It seems like I'd need to try something different. Can someone tell me if it's right or wrong? And

    asked by Janet
  366. CHEMISTRY

    calculate the ph of resulting solution when 2.50 ml of the 2.60 M acetic acid is diluted to make a 250.0 ml solution

    asked by TYLER CHIRECE
  367. Calculus

    The problem is lim --> 2 for g(x) which is 2((x-2/(squareroot x)-2)) I just substituted 2 in for x and 2((2-2)/(squareroot 2)-2) = 0 This doesn't look right. It seems like I'd need to try something different. Can someone tell me if it's right or wrong? And

    asked by Janet
  368. CHEMISTRY

    calculate the ph of resulting solution when 2.50 ml of the 2.60 M acetic acid is diluted to make a 250.0 ml solution

    asked by TYLER CHIRECE
  369. physics-ASAP

    a crate on a frictionaless plank inclined at angle theta with respect to the horizontal. Which of the follwing relationships is true? (assume that the x-axis is parallel to the surface of the incline) a)Fy = Fg b)Fx=0 c)Fy=Fx d)none of the above *my answer

    asked by carol
  370. Amazon

    Why did Amazon buy z a ppos? because it advertises it which makes both of them a good company and therefore people like it?

    asked by Anonymous
  371. chem

    what happens when NaCl(s) is dissolved in water? (1)Cl-ions are attracted to the oxygen atoms of the water (2)Cl-ions are attracted to the hydrogen atoms of the water. (3)Na+ions are attracted to the hydrogen atoms of the water. (4)no attractions are

    asked by Tina
  372. toxicology

    a) Generally speaking, the ability of a substance to move across a membrane by passive diffusion is enhanced by decreasing size and by an increasing octanol/water coefficient. T or F

    asked by mark
  373. Amazon

    why did amazon buy internet movie database - IMDb?

    asked by Anonymous
  374. Amazon

    What is a fulfil lment station?

    asked by Anonymous
  375. Chemistry

    Draw the lewis dot structure showing what happens during the reaction Lithium and Chlorine produce Lithium Chloride. how do you draw this, please help .

    asked by Tina
  376. World History

    Why is there such a wide diversity of people in Eastern Europe? What are some of the origins of these diverse groups?

    asked by Maya
  377. Biology: Why do cells divide?

    Which cells in the human body divide most frequently? Why is this? What activities or conditions spur cell division? What slows it down?

    asked by TheQuestion
  378. Calculus Please Help

    Let f(x)=4−x^2. Find each of the following: (f(2+h)- f(2))/h = ________ lim h->0 (f(2+h)- f(2))/h = ______

    asked by Cecille
  379. us/101

    what does a sense of purpose mean to you

    asked by sean
  380. World History

    What influence did the Mongol's Golden Horde have on the development of the Russian Empire? (Good or Bad?)

    asked by Maya
  381. Physics (please help)

    At the other end of what would come to be known as the Roman Empire, Parthian (Persian) archers were able to discourage pursuers by firing backwards from the back of a galloping horse-the famous "Parthian shot." a. If the speed of the arrow vB the

    asked by Eduardo
  382. psychology

    For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size - (b) 3 ?.

    asked by net
  383. statistics

    For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size - (b) 3 ?.

    asked by net
  384. ALGEBRA

    Match the function f ( x ) evaluated at each value of x to the correct function value if: f (x) = –2x + 5

    asked by JOHN
  385. math

    a farmer plants a square block of trees. he plants another 25 tress and still has a square plantation. how many trees in the new plantation

    asked by andre
  386. algebra

    How do I find the slope of each of the three line segments 3,6,9 not on a straight line. then which two points is the slope the largest?

    asked by andrea
  387. CHEMISTRY

    7. At pH 7.4 a weak organic acid with a pKa of 6.4 would be 60% ionized % Ionization =[(H^+)/(acid)]*100 = 3.98 x 10^-8 HA ==> H^+ + A^ K = (H^+)(A^-)/(HA) K = (H^+)(A^-)/[HA-(H^+)] Plug in 3.98E-7

    asked by ryan
  388. College Physics

    A small bead of mass m is free to slide along a long, thin rod without any friction. The rod rotates in a horizontal plane about a vertical axis passing through its end at a constant rate of f revolutions per second. Show that the displacement of the bead

    asked by Roger Cole
  389. physics

    A combination of .403 kg of water at 45.1 C, .471 kg of aluminum at 41.1 C, and .307 kg of copper at 50.4 C is mixed in an insulated container and allowed to come to thermal equilibrium. Determine the final temperature of the mixture. Neglect any energy

    asked by brandon
  390. Chemistry

    which of the following is insoluble ? (1)calcium chloride (2)ammonium phosphate (3)barium sulfate (4)potassium chromate so its 3 ?

    asked by Tina
  391. earth science

    describe a possible pathway of carbon through the four spheres of the earth.Identifty what each the fourspheres of the earth contains

    asked by jason
  392. algebra

    If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

    asked by kathy
  393. helpppp science 7

    what role do insulators play in preventing electric shock?

    asked by kim
  394. math

    Stacy multiplied 5x9 and said the answer was 44. What two patterns could you use to show that her answer is not correct?

    asked by sandra
  395. Chemistry

    which sample of matter is a mixture ? (1)H2O(s) (2)H2O(l) (3)NaCl(l) (4)NaCl(aq)

    asked by Penny
  396. science

    12. Aluminum in blood plasma was shown to undergo a first order elimination reaction with a half-life of 160 days. If the initial concentration was 8.2 µg/L, how long will it take for the concentration to drop to 2.5 µg/L?

    asked by dan
  397. Chemistry

    which amount of a compound dissolved in 110.g of water at the stated temperature represents a solution that is saturated? (1)20g KClO3 at 80 C (2)40g KNO3 at 25 C (3)40 g KCl at 60 C (4)60 g NaNO3 at 40 C

    asked by Jazmine
  398. math

    Need help with math problem. Tom has an unpaid balance of $2,115.75 on his credit card statement at the beginning of June. He made a payment of $85.00 during the month. If the interest rate on Phil's credit card was 11% per month on the unpaid balance,

    asked by John
  399. Chemistry

    if u add if you add 2.0 ml of 10.0 M HCl to 500 ml of a .10 M NH3, what is the pH of the resulting solution? for NH3, kb=1.8X10^-5

    asked by Kate
  400. Chemistry

    What is the [S^-2] in a saturated solution (.1 M) of H2S, in which the pH had been adjusted to 5.00 by the addition of NaOH? For H2S, Ka1= 1.1X10^-7 and Ka2=1.0X10^-14

    asked by Kate
  401. Chemistry

    A buffer solution of pH=9.24 can be prepared by dissolving ammonia and ammonium chloride in water. How many moles of ammonium chloride must be added to 1.0 L of .50 M ammonia to prepare the buffer?

    asked by Kate
  402. math

    26 1/4- 5 3/10

    asked by david
  403. Physics

    A brick is thrown vertically upward with an initial speed of 3.00 m/s from the roof of a building. If the building is 78.4 m tall, how much time passes before the brick lands on the ground? I think I may have gotten part of this question by first

    asked by Julia
  404. Physics...help please!

    At the other end of what would come to be known as the Roman Empire, Parthian (Persian) archers were able to discourage pursuers by firing backwards from the back of a galloping horse-the famous "Parthian shot." a. If the speed of the arrow vB the

    asked by Eduardo