Questions Asked on
December 1, 2011

  1. english

    Do I need a comma after the word book and does the sentence sound alright? When I first saw the title of the book I knew the theme would pertain to the importance of one’s identity.

    asked by jon
  2. ICD-9-CM

    Can you please help me code this correctly. Cataract due to type I diabetes. The question calls for two codes. I am really struggling with this course. Thank you.

    asked by Terry Davis
  3. physics

    A toboggan of mass 8.4 is moving horizontally at 18 . As it passes under a tree, 18 of snow drop onto it. We're covering Momentum and collisions, and I have no idea where to start here.

    asked by Pete
  4. physics

    A toboggan of mass 8.4 is moving horizontally at 18 . As it passes under a tree, 18 of snow drop onto it. We're covering Momentum and collisions, and I have no idea where to start here.

    asked by Pete
  5. PREAP Physics

    From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/hr?

    asked by Mandy
  6. Calculus I

    Find the exact area of the surface obtained by rotating the curve about the x-axis. y = sqrt(1+5x) from 1

    asked by Emily
  7. Calculus I

    Find the exact area of the surface obtained by rotating the curve about the x-axis. y = sqrt(1+5x) from 1

    asked by Emily
  8. algebra

    Guy wire. How long is a guy wire reaching from the top of a 24ft ploe to a point on the ground 16 feet from the pole What is the exact length? what is the lenght approximated to three decimal palces?

    asked by lisa
  9. organic chem

    In the Titration of amino acids Glycine and Lysine Which data can be obtained with greater accuracy? 1.the pK values from the "legs" ? 2.the isoleric point from the point of inflection?

    asked by maya
  10. algebra

    Darla is building a new deask. to make sure she had made a square corner, she measures 4ft. from the corner along one edge and 6ft from the corner long the othe edge . how long should the diaonal be between those two points if the corner is a right angle?

    asked by lisa
  11. chemistry

    The radius of an atom is about 10,000 times as large as its nucleus. If the atom were enlarged such that the radius of its nucleus was 1 inch, what would be the radius of the atom in meters? I need the formula to follow so that I can solve this problem.

    asked by george
  12. algebra

    how can i solve the inequality x+9>12 do i subtract -9 from both sides?

    asked by evelyn
  13. math

    suppose the diameter of a circle has length d. the length of a chord is c and the length of the arc cut off by the cord is s. express sin(s/d) in terms of c and d

    asked by Anonymous
  14. math

    how do i write 3474.8 in scientific notation

    asked by paul
  15. Chemistry

    Explain how the calculated molarity of the potassium permanganate would be affected by each of the following experimental errors. In each case, you must also state if the calculated molarity is higher or lower than the actual morality. a) Some sodium

    asked by 4B
  16. calculus

    Find the integral of x^3 + [(x^4)(tanx)] from -pi/4 to pi/4

    asked by Gabe
  17. Math

    In a flower box there are nine red flowers and six white flowers. There are three times as many yellow flowers as white ones. How many flowers are there in all?

    asked by John
  18. Math

    What is a3-1=? The 3 post to be on top of the a a little bit

    asked by Tiffany
  19. Math

    In a flower box there are nine red flowers and six white flowers. There are three times as many yellow flowers as white ones. How many flowers are there in all?

    asked by John please
  20. grammar

    Can you check this sentence, please? I know a little about helping injured and sick animals from volunteering at the social shelter. I look forward to learning more in school about how to treat animals.

    asked by Artemio Rivero
  21. chemistry

    what are the products of the following reaction. CH3COOH+CH3CH2OH---> (there is an H+ above the dotted arrow line)

    asked by destiny
  22. chem

    what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst.

    asked by candence
  23. statistics

    one out of three adults has worked in the restaurant industry at some point during his or her life. In an office of 84 workers, how many of these people would you expect to have worked in the restaurant industry at some point?

    asked by Anonymous
  24. science

    a gaseous compound of carbon and hydrogen contains 80% carbon by mass, one dm3 of the compound at s.t.p weighing 1.35g. calculate

    asked by aduma
  25. English

    I urgently need you to check these sentences. Thank you. 1) I'm angry/annoyed/upset(?)/ furious with him for arriving late. I'm angry/upset about his behavior in class. I'm fed up with his behavior. 2) I'm dissatisfied/satisfied with my exam result. 3) I'm

    asked by Henry2
  26. myer park elementary

    What is the analogy for honestly

    asked by Anologies
  27. English

    I left out the following adjectives. 1)I'm cheerful about (I can't find an example). 2) She was depressed about the hard wprk.

    asked by Henry2
  28. science

    what is the reaction when ethanol and ethanoic acid react in the presence of an acid catalyst

    asked by candence
  29. statistics

    How do we compute sample size fluctuations? Suppose we have a population of 16000 and a sample size of 30, and the number of samples 1000, what will be the impact on population mean and standard deviation when the population is normally distributed? When

    asked by Nasir
  30. Spanish please check

    please check if I answered these questions correctly-they had to be in the past tense-not sure what number 6 is asking 1.¿Comó te sentiste ayer? Me sentí muy bien ayer. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama ayer? Mi mama fue a

    asked by Mia
  31. GP Caluculus

    The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression

    asked by Watermelon
  32. physics

    A student pushes on a desk with a horizontal force of 125 N and moves the desk 3.2 m directly across the floor. How much work is done?

    asked by Patti
  33. physics

    a sailor pulls a boat along a dock by a rope held at an angle of 55.5 with the horizontal. How much work is done if the sailor exerts a force of 345 N on the rope and pulls the boat 23.8 m?

    asked by tammy
  34. business

    What are the three elements of customer service, and how are they important to CRM?

    asked by Guillermo
  35. GP Caluculus

    The third term of a geometric progression is 16. The sum of the third term and the fouth term is 8. Find (a)the first term and the common ration of the progression (b)the sum of infinity of the progression

    asked by Watermelon
  36. maths

    x+100=50

    asked by talati
  37. maths

    4x+5=17

    asked by talati
  38. maths

    3x+17=32

    asked by talati
  39. chemistry

    20 g of CO2 is placed in 0.75l Bottle and sealed. what is the pressure in the bottle if the temp is 25C?

    asked by Jazzmin
  40. maths

    8r-23=-7

    asked by talati
  41. maths

    x/8=+11

    asked by talati
  42. maths

    x/+4=1/8

    asked by talati
  43. maths

    z/7=1/21

    asked by talati
  44. maths

    use the inverse method to solve the system of linear equations -x +3y+2=1 2x+5y=3 3x+y-2z=-2

    asked by chrystabelle
  45. physics

    A desk weighing 80 N rests on the floor. The coefficient of friction between the floor and the desk is 0.25. What is the frictional force between yhe desk and the surface of the floor?

    asked by maria
  46. physics

    A 40 N force is applied to pull the desk horizontally to the right. What is the magnitude (the net force or the total force) acting on the deak ?

    asked by maria
  47. Chemistry

    How many milliliters of 0.250 M sodium hydroxide are needed to titrate 35.0 mL of 0.425 M hydrofluoric acid?

    asked by Victoria
  48. Math

    perform the indicated operations and simplify x-5/x-7-x-1/x+7+x-35/x^2-49

    asked by Allison Anderson
  49. algebra

    can you place 44 coins in 10 containers evenly and not have the same amount of coins in each container

    asked by charlie
  50. Math

    Jim's sandwich cost the same as the comjbined cost of his salad and milk. The sandwich cost three times as the milk. The salad cost $0.20 more than twice the cost of the milk. How much did Jim's lunch cost?

    asked by Billy
  51. physics

    A car is traveling 10 m/s when the driver sees a dog in the road. The driver takes 0.7 s to react, then steps on the brakes and slows down at 3.0 m/s2. How far does the car go before it stops? Name the forces, their directions, and the distances involved

    asked by JuJu
  52. sample size/ standard deviations

    How do we compute sample size fluctuations? Suppose we have a population of 16000 and a sample size of 30, and the number of samples 1000, what will be the impact on population mean and standard deviation when the population is normally distributed? When

    asked by ut
  53. Calculus

    Find the partial derivative for x. f(x,y)=1/SQRTx^2+y^2

    asked by Jane
  54. British literature

    how do you mark the syllables, separate the feet with vertical lines, and indicate the rhyme scheme of the following passages That time of year thou mayst in me behold______ When yellow leaves, or none, or few, do hang_____ Upon those boughs which shake

    asked by alisa
  55. physics

    What is the downward force on a ball with a mass of 7.5 x 10^-1 kg thrown in the air due to gravity?

    asked by JuJu
  56. arithmetic

    if V(X)=3 then find 1)V(X+10) 2)V(X-3) 3)V(5X) 4)V(2X+3)

    asked by Anonymous
  57. physics

    A 1200kg car has its tyres inlated to a gauge pressure of 180kpa.How large an area for each tyre is in contact with the ground

    asked by ceasar
  58. Geometry

    the legs of an isosceles triangle have lengths 2x+4 and x-8 the base has length 5x-2 whats the lenght of base

    asked by Purple
  59. variation

    IF arithmetic mean is 10 and V(X)=4 find mean and standard deviation of z where Z=5x+4

    asked by Anonymous
  60. PSYCHOLOGY HELP PLEASE!!

    Trish is overweight. When you meet her for the first time, you feel contemptuous. This is an example of: a. stereotyping. b. ethnocentrism. c. discrimination. d. prejudice. I think it is d but I also thought c might be right.

    asked by Anonymous
  61. math

    what is the area of a rectangle that is 3 yards wide by 8 yards long?

    asked by anna
  62. spanish

    how do you say, "what subjects are at your school.?"

    asked by sierra
  63. statistics

    A manager wishes to determine the relationship between the number of miles (in hundreds of miles) the manager's sales representatives travel per month and the amount of sales (in thousands of dollars) per month. Find the equation of the regression line for

    asked by Angel White
  64. Physics

    Q. A water pump lift 9kg of water through a vertical height of 3.5 m in 10 minute .calculate the power of the pump?

    asked by prem
  65. geometry

    The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in

    asked by Joel
  66. geometry

    The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in

    asked by Joel
  67. GP Caluculus

    The third term of a geometric progression is 16. The sum of the third term and the fourth term is 8.Find (a)the first term and the common ratio of the progression. (b)the sum of infinity of the progression.

    asked by Watermelon
  68. logic

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional

    asked by Dell
  69. chemistry

    A student used 6.3 x 10^3 J to heat up 50.0g of porcelain from 25.0 degrees Celcius to 45.0 degrees Celcius. What is the specific heat of porcelain?

    asked by Kdot
  70. US History

    I need help with a cartoon. I can't find it online so I know it'll be hard to understand. Any help is appreciated! In the cartoon there's two men laying in bed one is Uncle Sam(the hat he wears is on the bed post) and I'm not sure who the other is, just a

    asked by Sarah Beth
  71. Math

    Add Simplify if possible 9x/x^2-4 + x/x-2

    asked by Allison Anderson
  72. math

    Marnie collects red, blue and purple buttons. At the beginning of the year she has 360 buttons in a box. The ratio of red buttons to blue buttons is 4:3 and there are twice as many red buttons as purple buttons. a.What is the ratio of blue buttons to

    asked by Dell
  73. chemistry

    How much of the water (in grams or mL) is consumed to produce 15 mL of the H2 gas? Use PV = nRT ; assume T = 298K, P = 1 atm

    asked by mook
  74. logic

    A son and his father take a daily walk up a hill. It is 1.5 km to the top of the hill. As the father gets older he can only walk half the speed of his son. So they start together but the father trails his son. The father reaches the halfway point when the

    asked by Dell
  75. math

    add (3x^2-9xy+y^2)+(-8x^2-7xy-y^2)+(x^2+xy-2y^2)

    asked by Allison Anderson
  76. Math

    solve 10x^4-11x^2+3=0

    asked by Allison Anderson
  77. Calculus

    Let R be the region bounded by the x-axis, x = 5 and the curve y = x. This region is rotated around the x-axis. Find the volume of the resulting solid. (Note: R is a triangular region. The resulting solid has a simple shape. You may ask me if you are

    asked by Macy
  78. Calculus

    Let R be the square region bounded by y = 2, x = 2, and the x and y-axes. When R is rotated about the x-axis, what is the volume of the resulting solid? What is the volume of the solid generated by rotating R about the y-axis?

    asked by Macy
  79. English

    I urgently need you to check these sentences. 1) Tourists spend their holiday in bed and breakfasts and go to restaurants. 2) I like the countryside because the air is cleaner and the atmosphere is quieter.There is always something to do, like going for a

    asked by Henry2
  80. physics

    A steel wire in a piano has a length of 0.6000 m and a mass of 3.000 10-3 kg. To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C (fC = 261.6 Hz on the chromatic musical scale)?

    asked by jim
  81. Spanish-Please check

    Could some one please check these-I had to answer them in the past tense which is still confusing me-I think most of them are correct-Thank you 1.¿Comó te sentiste ayer? Yo sentí muy bien. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama

    asked by Mia
  82. english

    Can you tell me what a Begrudge is?

    asked by amber
  83. CHEMISTRY

    DETERMINE THE NUMERICAL VALUE OF KEQ. A) 2HI(g)--------H2(g) +I2(g) Where [HI]=0.27m,[H2]=0.86M and [I2]=0.86M at 200c

    asked by DIAMONDPRM
  84. programming

    This pseudocode should detrmine the rental fees for cars // Standard cars rent for $65 per day; compacts rent for $40 per day // and subcompacts rent for $30 per day // Rentals for at least 7 days receive a 20% discount // An error message is displayed if

    asked by steve
  85. statistics

    130dan72 çık

    asked by Anonymous
  86. math

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional

    asked by Dell
  87. Algebra

    write 16.3 million in standard and scientific notation form ?

    asked by chelsea
  88. algebra

    what's the percent increase in the sales from 2.08 million to 16.3 million?

    asked by chelsea
  89. Chemistry

    3NO2 + H2O = 2HNO3 + NO How many grams of nitrogen dioxide are required to produce 5.89 x 10 to the 3rd power kg HNO3 in excess water?

    asked by Katelyn
  90. Chemistry

    what is the concentration of a weak acid with a pH of 3.25, if the Ka of the weak acid is 1.6 x 10^-7 ?

    asked by Cody
  91. calculus(QUICK QQUESTION!!)

    if f(t) were continious on the interval [-2,1] but youo were only given the function for t=-2,-3/2,-1,-1/2 ..,3/2 and 2, explain how would you apporximate f'(1)

    asked by Yoona
  92. Physics

    A light ray travels from water to air. If the ray strikes the water/air boundary at an angle of incidence of 46 degrees, what is the angle of refractiob in air? (n water = 1.33)

    asked by Jake
  93. english

    1)From reading "Birches," we can conclude that the speaker is a(n): a) boy. b) birch tree. c) old man. d) girl on her hands and knees. 2) the tone of "A Simile" is: a) hopeful b) cheerful c)tense d) light

    asked by cheddie
  94. Physics

    A farsighted person has a near point (closest point they can see clearly) of 200 cm. What power and type of lens will correct this condition and allow the person to read a book at 25 cm?

    asked by Jake
  95. Algebra

    how do you write a polynomial equation that represents the cost of renting a car for m miles.The cost to rent a car for a day is $15 plus $0.15 for each mile driven. help please!!!!

    asked by chelsea
  96. Physics

    Light shines through a single slit whose width is 1.12 mm. A diffraction pattern is formed on a screen located 4.0 m away. The distance between the middle central bright fringe and the second dark fringe is 4.0 mm. What is the wavelength of the light?

    asked by Jake
  97. Physics

    A 5 meter diameter telescope is used to observe binary star systems. What is the minimum separation distance (perpendicular to the line of sight) for which the two stars can be resolved if they are at a distance of 1,000 light years = 10 m and they are

    asked by Jake
  98. Physics

    A 3.0 cmm high object is placed 10 cm from a concave mirror whose radius of curvature is 10 cm. Where is the image located?

    asked by Jake
  99. algebra

    16 times 3 over 4 what doe sit equal with it simplify

    asked by STDS
  100. Physics

    A convex mirror has a focal length of 15 cm. A 3.0 cm high object is located 10 cm in front of this mirror. Where is the image located?

    asked by Jake
  101. geometry

    in triangle FSH, angle f is 58 degrees and angle s is 64 degrees. in triangle LVQ, angle v is 64 degrees and angle q is 48 degrees are the two triangles similar?

    asked by kim
  102. biology

    how many poeple prefer batteries than plugging a cable on the wall and why?

    asked by Anonymous
  103. algebra

    given the following quadratic equation, determine if it has a maximum or a minimum value. Then find the maximum or minimum value f(x) - -11x^2 - 2x - 7

    asked by anon
  104. Criminal Justice

    How does a prosecutor determine which cases to pursue?

    asked by PENNY
  105. Alg. 2

    Hello so I'm suppose to Determine whether the given binoial is a factor of the polymonial P(x) and here's the question (2x-4); P(x)=2x5-4x4+2x2-2x-4 I keep going over and over it and end up with ridiculous numbers -_- please help! thank you

    asked by Rosa
  106. science

    a bouncing ball of mass 200g leaves the ground with a kinetic energy of 10J a)if the ball rises vertically, calculate the maximum height it is likely to reach. b)in practice, the ball rarely reaches the maximum height. explain why this is so.

    asked by anabel
  107. arithmetic

    find the whole to 565 tires 12.4%what numbers of tires.

    asked by sally
  108. geometry

    Write the equation for the vertical line that contains point E(8, 6).

    asked by Cindy
  109. american history

    I must provide a historical overview of the evolution of U.S. cities from colonial times to the present. could you please provide me with a starting point and some web resources. thanks.

    asked by elisa
  110. Physics

    The vector position of a 3.00 g particle moving in the xy plane varies in time according to the following equation. r1 = At the same time, the vector position of a 5.85 g particle varies according to the following equation. r2 = For each equation, t is in

    asked by LadyJ
  111. General Physics

    A 0.500 kg sphere moving with a velocity (2.00i - 3.50j + 1.00k) m/s strikes another sphere of mass 1.50 kg moving with a velocity (-1.00i + 2.00j - 2.80k) m/s. (a) If the velocity of the 0.500 kg sphere after the collision is (-1.00i + 3.00j - 8.00k) m/s,

    asked by LadyJ
  112. chemistry

    Using electron bookkeeping draw a Lewis dot diagram for NF2H and N2H2 determine how many electrons each atom should be assigned. Thanks Guys I really appreciate it, my assignment is due tonight and the test is tomorrow, could you explain it,thanks

    asked by Will J
  113. sociology

    Define urbanization and suburbanization. What are some ways that urbanization and suburbanization contribute to social problems?

    asked by tiffany
  114. chemistry

    magnesium nitrate decompses in water and releases ammonia gas. If 355ml of ammonia is produced at STP, whit is the mass of Magnesim nitrate that reacted. Equation is Mg3N2+6H2O=3Mg(OH)2+2NH3

    asked by George
  115. Statistics

    The weights of trout in a certain river follow a normal distribution with mean 3 pounds and standard deviation 0.8 pounds. What proportion of trout weigh between 3.2 pounds and 4.8 pounds? a.) .3891 b.) .9972 c.) .9452 d.) .5865

    asked by Jay
  116. Statistics

    In the July issue of Archives of Neurology, researchers reported studying the smoking habits of 12000 people (3000 with Parkinson's disease and 9000 healthy people). They found that those who had smoked the most (the equivalent of a pack a day for 60

    asked by Jay
  117. Statistics

    True or False: If the value of the correlation, r, is zero then there is no association between the two quantative variables.

    asked by Jay
  118. Geology

    I need to write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of igneous rocks. Can someone help me get started with this and on the right track? Thanks

    asked by Scott
  119. Geology

    I need to write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of metamorphic rocks. Can someone help me get started with this and on the right track? Thanks

    asked by Scott
  120. convert derivatives of x,y,z, to r, Ɵ,z

    convert derivatives of x,y,z, to r, Ɵ,z with chain rule? I want provment rules of converting rectangular derivatives to cylindrical derivatives and and also cylindrical to spherical.I know the rules but I cant prove EQUATIONS.thx alot

    asked by parsa
  121. Need help

    Studies have demonstrated that "latchkey children"

    asked by Anna
  122. books

    who saves Buck from impending death at the hands of Hal?

    asked by Anonymous
  123. chemistry

    An analytical chemist determines that an unknown sample contains 0.3452 mol of LiCl. How many atoms of chlorine does this sample contain?

    asked by jack
  124. algebra

    For the polynomial below list each real zero and its multiplicity. f(x) = (x + 1/1)^4 (x^2 + x)^5 Really need some help with this! Have worked it twice and got two different answers!

    asked by anon
  125. statistics

    Tax Preparers Inc. works 250 days per year. The company uses adding machine tape at a rate of eight rolls per day. Usage is believed to be normally distributed with a standard deviation of three rolls during lead time. The cost of ordering the tape is $10

    asked by Brenda
  126. Math

    i go to college and it take 40 to 45 gallon every monthto go to college, some time cost of the gallon varies 2.96 to 3.61 /gallon . what would be my weakly cost to drive college. please answer . i come up with 21 dolor.Am i right or miss some thing .

    asked by hiba
  127. Math

    what does cos x = 0.418? On the interval (0,2pi)

    asked by Candyce
  128. English

    I urgently need you to check these sentences, please! 1) My favourite places are the woods (??).I live in a little village surrounded by a hilly landscape. 2) More than one thousand people live there (or here?). 3) I'd prefer to live in Milan even if (??)

    asked by Henry2
  129. Physics

    A radio set at a sound level of 20 dB is suddenly increased to 80 dB. how many more time greater is the pressure amplitude at 80 dB? I do not know what to do please help

    asked by emily
  130. chemistry

    you measure out a 15g sample NaCl. the quantity of this sample is considered what

    asked by marlena
  131. english

    the climax comes at the end of the middle section of the story after which the author "ties up loose ends" by telling the reader what happened to each major character. true or false

    asked by tracy
  132. Physics

    A 0.500 kg sphere moving with a velocity (2.00i - 3.50j + 1.00k) m/s strikes another sphere of mass 1.50 kg moving with a velocity (-1.00i + 2.00j - 2.80k) m/s. (a) If the velocity of the 0.500 kg sphere after the collision is (-1.00i + 3.00j - 8.00k) m/s,

    asked by LadyJ
  133. 6th grade science

    describe the rate at which chemical weathering generally takes place.

    asked by kate
  134. Social Studies

    What was the month day and year that the Townshend Acts happened?

    asked by Jaycee
  135. Psychology Please Help!

    Shelby is a very outgoing person who likes being around other people and socializing with them. According to the Big Five trait theory of personality, Shelby would be considered: a. showing signs of her masculine archetypes in her collective unconscious.

    asked by Anonymous
  136. Physics

    A popular carnival ride consists of seats attached to a central disk through cables. The passengers travel in uniform circular motion. As shown in the figure, the radius of the central disk is R0 = 3.00 m, and the length of the cable is L = 1.43 m. The

    asked by Jackie
  137. math

    Find the following 12 square root symbol (-6)12

    asked by Allison Anderson
  138. PSYCHOLOGY HELP PLEASE!!

    Psychologist Claude Steele is widely noted for his research on stereotype threat, which refers to a: a. fear of groups for which we hold negative stereotypes. b. fear that members' behavior will confirm stereotypes about their group. c. belief that

    asked by Anonymous
  139. scientist

    How could measuring the orbit of a comet help scientists understand when it will next be visible from earth

    asked by Malaka
  140. us history

    What was Scott Joplin most known for duirng the 1920's? please do not just give me a url to a site with his biography because i have already looked at many! I am trying to narrow my answer down to 3 sentences. thanks!

    asked by hannah
  141. 7th grade math

    please help me solve n-16= -23

    asked by asia
  142. Physics

    A square pool with 180-m-long sides is created in a concrete parking lot. The walls are concrete 52.9 cm thick and have a density of 2.50 g/cm3. The coefficient of static friction between the walls and the parking lot is 0.515. What is the maximum possible

    asked by Donna
  143. English

    Thank you very much. I left out the following sentences. 1) I like everything in (of) the place where I live. My town is famous for its wines and truffles among other things. 2) There are a lot of sports facilities:tennis courts, a football pitch (ground?)

    asked by Henry2
  144. Chemistry

    All volume measurements are carried out at the same temperature and pressure. If 20.0 L of O2 (g) are allowed to completely react with a sample of pure CH4 (g) in a combustion process producing CO2 (g) as the only carbon-containing product, what is the

    asked by Anonymous
  145. astronomy/physics

    Use Newton’s Law of Gravity to calculate the force of gravity between a 39 kg person and Earth.

    asked by silvia
  146. Physics

    A phonograph record initially moving at 33 1/3 rpm accelerates uniformly to 45 rpm in 2.5 s. What is the angular distance traveled by the record during this time?

    asked by Rebecca
  147. Social Studies

    In what country were the first assistance dogs developed in the 1920s as guide dogs for veterans who lost their sight during World War 1?

    asked by Jaycee
  148. Psychology Please Help!

    In psychology, the study of personality focuses on: a. change. b. stability. c. external factors. d. learned factors. I think it is b. I know personality is the pattern of enduring characteristics that produce consistency and individuality in a given

    asked by Anonymous
  149. networking

    I need help on how to design a boardroom in which any department's information can be accessed and expressed

    asked by Gloria
  150. Science 7R (Lab questions)

    We did a lab today at science and for homework we have to answer questions about the Lab. I need help on 2. 12. Name two ways that a plant and animal cells differ in structure? 13. How are plant and animal cells different in function? She said that we have

    asked by Laruen
  151. Calculus

    A car rental agency rents 180 cars per day at a rate of 32 dollars per day. For each 1 dollar increase in the daily rate, 5 fewer cars are rented. At what rate should the cars be rented to produce the maximum income, and what is the maximum income?

    asked by JEUCD 12/1/11
  152. physics

    Find the speed of a sleigh sliding 326 feet in 22 seconds.

    asked by kay
  153. Calculus

    A certain magical substance that is used to make solid magical spheres costs per cubic foot. The power of a magical sphere depends on its surface area, and a magical sphere can be sold for per square foot of surface area. If you are manufacturing such a

    asked by JEUCD 12/1/11
  154. English

    Sorry, I included the wrong post. I still have a few doubts on the following sentences. 1) The traffic isn't very heavy. 2) A security officer will control (check?) you for metal. 3) Get on the plane (not in), find your seat and wait for your flight

    asked by Henry2
  155. Math

    x+3y=1 -5x+4y=-24 Solve the linear system by using elimination

    asked by Kesha
  156. writing

    Do you have any tips for writing an opinion paper?

    asked by Liam
  157. English 7 Essay: Rosa Parks (Ms. Sue)

    Ms. Sue can you check my essay is it good. Btw we did the conclusion today at class (last paragraph). I did the mistakes I made yesterday (that you told me to change). Rosa Parks A person's characteristics are shaped by the setting and beliefs of society

    asked by Laruen
  158. Ela Help!!!!!!!!!!!!!!!!!!!!!!!

    what does Vegetarian - that's an old Indian word meaning lousy hunter mean?

    asked by Zack
  159. Math

    What adds up to get 100%? 68% , 1/2 , 60% ,1/20 , 1% , 0.9 , 0.04 ,13/20 , 1/7 , 3/25 ,16% ,55% , 0.02 , 1/9 , 0.15 , 1/8 , 24% , 0.44 , 0.06 , 1/6 , 1/4 , 29% , 0.037 , 1/3 , 19% , 17/50

    asked by Lisa
  160. sociology

    From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the

    asked by nameless
  161. Physics

    Five moles of an ideal gas are compressed isothermally from A to B, as the graph illustrates. What is the work involved if the temperature of the gas is 351 K? Be sure to include the correct algebraic sign. I did 8.31x351x5 but the answer is wrong... any

    asked by Jasmin
  162. physics

    A Carnot engine, operating between hot and cold reservoirs whose temperatures are 800.0 and 400.0 K, respectively, performs a certain amount of work W1. The temperature of the cold reservoir is then lowered to 200.0 K (see the drawing), and the work done

    asked by Aryiana
  163. Calculus

    what happens when the limit goes to infinity 4x-6sqrt(x)

    asked by Johny
  164. calculus

    A spring exerts a force of 4x lbs when it is compressed a distance of x feet. How much work is required to compress the spring a distance of one inch?

    asked by sam
  165. calculus

    what happens when Limit as x approaches infinity A) (sqrt(9+10x^2))/(7+9x)

    asked by Johny
  166. calculus

    An object moves in such a manner that its velocity at time t is given by v(t) = t3 - 4t2 +3t At t = 0, it starts at position x = 0. During the interval [0, 4] what is the absolute distance moved?

    asked by Mike
  167. chemistry

    Which is not a true statement concerning electromagnetic radiation? It travels through space at 3.0 x 1010 cm/s. It travels in a straight line. It has the fastest speed possible in nature. The sun is a source of it.

    asked by katelyn
  168. calculus

    A metal chain weighs 30 lbs and is 10 feet long. How much work is required to lift one end of the chain to a height of 15 feet (so that the other end of the chain will be at a height of 5 feet)?

    asked by Steven
  169. calculus

    An object moves in such a manner that its velocity at time t is given by v(t) = t3 - 4t2 + 3t At t = 0, it starts at position x = 0. During the interval [0, 4] what is the net distance moved?

    asked by Jenny
  170. calculus

    Find the center of mass of the region bounded by the curve y = x3 - 4x2 +3x ; the x-axis ; x = 0 ; x = 1

    asked by Trisha
  171. statistics

    A statistician is testing the null hypothesis that exactly half of all engineers will still be in the profession 10 years after receiving their bachelor's. She took a random sample of 200 graduates from the class of 1979 and determined their occupations in

    asked by Anonymous
  172. MATH!!!! 7th

    100,121,105,113,108,x; mean 112

    asked by jordan
  173. math (Ms.Sue)

    Bella planted 7 marigolds in each of the 8 rows in her garden.Then she planted 2 tulips in each of the rows.If she bought 60 marigolds in all,does she have any remaining?If so,how many? My Solution: 7*8=56 60-56=4 4 is my answer am i right?

    asked by lidia
  174. alegebra

    Apply the rule (1.5x,1.5y)to the verticies of triangl ABC (0,2)=A (6,2)=B (4,4)=C to get triangle PQR

    asked by Laura
  175. media and american culture

    Do you think the Internet has created more harm than good to artists in the music industry? Explain your answer.

    asked by greg
  176. Spanish-Please help!!

    Hi I posted early and got a response but the correction suggested can't be corret. Could someone please check these answers-I had to answer in past tense-- Could some one please check these-I had to answer them in the past tense which is still confusing

    asked by Mia
  177. physics

    Help me with this problem i do not get it? A light wave can travel the earth to the moon in 1.3 s. the distance to the moon is 384,790 km. how long would it take a sound wave to travel the same distance at 343 m/s? state you answer in days. I got 2 days

    asked by susan
  178. math

    The number 33 bus arrives at the corner of Coldspring and Hillen every 15 minutes. The number 40 bus arrives at the same corner every 46 minutes. If both buses leave the corner at 9:08 am, when is the next time the buses arrive at the corner at the same

    asked by kelly
  179. PLEASE

    ANYONE PLEASE REPLY MY OTHER POST (SCIENCE 7R: LAB QUESTIONS) IS MY ANSWER IS CORRECT ON #13????? PLEASE!!!!!!!!!!!!!!!!!!!!! PLEASE!!!!!!!! - Laruen , Thursday, December 1, 2011 at 6:33pm Chloroplast are used for food making (photosynthesis). That is only

    asked by Laruen
  180. statistics

    A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. I need more than the answer. I'm looking for help on the steps to get to the answer,

    asked by Laura
  181. To Laruen ~

    Please do not use all-caps when you type or umpteen thousand exclamation marks or question marks. Those kinds of actions indicate to us that you have no patience or online manners. Please don't continue doing those things. You may end up putting yourself

    asked by Writeacher
  182. Math

    Jamie is a quality control specialist. He is required to check 180 rubber balls out of a shipment of 18,000for defects. He finds that 3 are defective. Of the balls in the bin, he predicts there will be 300 balls defective. What percent if the rubber balls

    asked by Sarah
  183. Question

    What is a High School Diploma???? I'm really curious.

    asked by Laruen
  184. Intro to comp

    What unit of measure is used to determine the performance of a CPU? (Points: 5) Bits per second Cycles per second Hertz Instructions per second Is it D

    asked by Andy
  185. math

    Ken paid $8.50 for tickets an adult paid $2.00 more than a child how much does the adult pay

    asked by tony
  186. Math

    Jamie is a quality control specialist. He is required to check 180 rubber balls out of a shipment of 18,000for defects. He finds that 3 are defective. Of the balls in the bin, he predicts there will be 300 balls defective. What percent if the rubber balls

    asked by Sarah
  187. Physics

    The volume of a gas is changed along the curved line between A and B in the drawing. Do not assume that the curved line is an isotherm or that the gas is ideal. pressure and volume are: 2.0x10^4 Pa and 2.0x10^(-3) m^3 (a) Find the magnitude of the work for

    asked by Aryiana
  188. intro to comp

    Which type of memory can only be read and not written to? (Points: 5) Volatile RAM PROM FLASH I think its RAM

    asked by Andy
  189. math

    Jason earns 30 cents for every carrot he sells. He earns an extra $3 for every 30 carrots he sells.How many carrots must he sell in order to earn $555?

    asked by Anonymous
  190. intro to comp

    What is the set of instructions the computer uses to boot up called? (Points: 5) BIOS BOOT POST SETUP im confused i don't know the answer to this one

    asked by Andy
  191. Science

    Give an example that explains each below. a- *answered* b- fluids exert pressure

    asked by Jada
  192. geography

    true or false? Peru's landform make easy to travel from one part of the country to another

    asked by Anonymous
  193. geo

    a carpenter cut the top section of window frame with a 32 degree angle on each end. The side peices hav an angle of 49 degreese at the top will the side pieces be parallel

    asked by shane
  194. math

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional

    asked by dell
  195. simplest form

    write each fraction in simplest form 1) 24/32 = 3/4 2) 18/27 = 2/3 3) 33/39 = 11/13 4) 8/18 - 4/9 5) 16/28 = 4/7 6) 21/28 = 21/28 7) 18/30 = 3/5 8) 25/35 = 5/7 ARE THESE Correct?

    asked by marko
  196. physics

    Water in a cylindrical container is hanging by a rod from the ceiling at point O shown in the figure. The container is initially full, and initially displaced 20 degree . There is a hole in the bottom where water pours out and the top of the container is

    asked by toledo
  197. Math

    Show all work If $7,500 is invested in a savings account earning 5% interest compunded quarterly, how many years will pass until there is $20,000?

    asked by Liz
  198. Business comunication

    Which of the following is NOT a question you need to answer to choose a persuasive strategy ? What do you want readers to do ? What points will the audience agree with ? How strong a case can you make ? What kind of persuasion does your organization value

    asked by ssmhollywood
  199. into to comp

    Which of the following is a common standard interface for hard drives? (Points: 5) API EIDE SCSI USB is it D What is the interface between a hard disk and the CPU? (Points: 5) BIOS filter Controller Interface mechanism Small Computer Interface Is it

    asked by Andy
  200. physics

    A 2.40- bullet embeds itself in a 1.20- block, which is attached to a spring of force constant 770 .

    asked by bullet and block
  201. chemistry

    calculate the hydronium ion concentration in an aqueous solution that contains 2.50x10^-6M in hydroxide solution

    asked by brittney
  202. chemistry

    a lab experiment calls for 10% acetic acid solution. The lab has only 5% and 15% acetic solutions available. How much of each should be mixed to obtain 10 liters of a 10% solution?

    asked by Brandy
  203. Outside of School (question)

    What kind of activities I can do outside of school????? Pleas list if you have any ideas. Thank YOU! :)

    asked by Laruen
  204. miss sue

    i go to college and it take 40 to 45 gallon every monthto go to college, some time cost of the gallon varies 2.96 to 3.61 /gallon . what would be my weakly cost to drive college. please answer . i come up with 21 dolor.Am i right or miss some thing . Math

    asked by hiba
  205. chemistry

    which of the molecules listed below can form hydrogen bond? For wich of the molecules would dispersion forces be the only intermolecular force? Give reasons for answer. A.H2 B.NH3 C.HCl D.HF

    asked by selene
  206. chemistry

    which of the molecules listed below can form hydrogen bond? For wich of the molecules would dispersion forces be the only intermolecular force? Give reasons for answer. A.H2 B.NH3 C.HCl D.HF

    asked by selene
  207. pre cal

    Is the given function linear or nonlinear. If linear determine the slope. x y = f(x) 1 -2 -2 -14 3 8 4 4 -6 1

    asked by anon
  208. trig

    express the product of radical 90 x radical 40 -radical 8 x radical simplifies to ?

    asked by Anonymous
  209. common factors

    i need to use common factors to write 2 factors equivalent to each fractions: 1) 8/24 i got 2/6 and 1/3 2) 18/36 igot 3/6 and 1/2 3) 27/81 i got 1/3 and 9/27 4) 60/140 i got 3/7 and 15/35 5) 30/42 igot 5/7 and 10/14 6) 45/90 igot 1/2 and 5/10 7) 24/84 i

    asked by marko
  210. Geometry

    A ladder leans against a house at a 60° angle to the ground. If the ladder extends to a length of 132 inches, what is the height of the house to the nearest hundredth of an inch?

    asked by Silvia
  211. math

    18a^3 + 30a^2 / 3a

    asked by Megan
  212. 4th grade math

    Is 1,725+346 more or less than 2,000? Explain how you can tell without actually adding.

    asked by Nancy
  213. statistics

    minnie went to union high school while mickey went to southern high school. both schools have equally challenging classes, class size, grading policies, etc. the one difference is in their year end tests. the union high test is out of 100 points, whereas

    asked by wanda
  214. Physics, Kinematics

    You drive with a constant speed of 15.1 m/s for 23.4 s. You then accelerate for 28.7 s to a speed of 25.8 m/s. You then slow to a stop in 37.1 s. How far have you traveled? I've tried dividing this into 3 parts. 1st- constant speed 15.1m/s*23.4s=353.34 m

    asked by Jackie
  215. algebra

    find the average rate of change from (2,1) to (8,5) for f(x)=(4x^(2)-2x)/(6x)

    asked by cj
  216. Calc

    We are working on finding the intervals of convergence of power series in class. Why do we not have to test for the convergence of the endpoints for geometric series? They always seem to diverge. Is this a set rule when working with the geometric series

    asked by Chloe
  217. Science

    How does Earth have seasons?

    asked by Josh
  218. English

    Tom and Phyllis said they would pay our dog's boarding costs. What is the subordinate clause? Is it our dog's boarding costs

    asked by Beth
  219. chemistry

    What mass of steam is required to release 4.36 × 105 kJ of heat energy on condensation? answer in unit of g.

    asked by Anonymous
  220. US Gov

    Using the buddy system, an agency can circumvent the usual OPM search process by: a. asking the president to appoint a specific candidate. b. blanketing in a job candidate. c. duplicating positions. d. issuing a merit dispensation. e. issuing a name

    asked by Brann
  221. English

    Ms. Sue I just cannot figure what the subordinate clause would be in this sentence, Tom and Phyllis said they would pay our dog's boarding costs. Is it "said they"

    asked by Beth
  222. geometry

    Find the measure of the vertex angle of an isosceles triangle if either of the exterior angles formed by extending the base measures of 112

    asked by tina
  223. education

    How do media writers influence society?

    asked by danie
  224. statistics question

    if i have x^2 = 15.505 and 9 degrees of freedom and a significance level of .10 how do i figure out the p value on my calculator?

    asked by jabrony
  225. math

    How you can use a hundred chart to subtract 12 from 46

    asked by william
  226. College Algebra

    Show all work When a person has a cavity filled, the dentist typically administers a local anesthetic. After leaving the dentist's office, one's mouth often feels numb for several hours. If a shot of anesthesia is injected into the bloodstream at the time

    asked by Rick
  227. Physics

    A 2.97 kg block initially at rest is pulled to the right along a horizontal surface by a constant, horizontal force of 12.9 N. The coefficient of kinetic friction is 0.126. The acceleration of gravity is 9.8 m/s^2. Find the speed of the block after it has

    asked by Jem
  228. science

    What are vesicles?

    asked by gabi
  229. Calculus

    A farmer wishes to enclose a long rectangular pin that will then be divided into four separated, adjacent pins (all 4 pins are in a row) for different breeds of farm animals. He has 1100 feet of fencing available for use. What should the dimensions of the

    asked by Kirsten
  230. English

    I have started on my initial draft and turning it into an essay. Like I said before it is about Banning cellphones while texting/driving and my main objective is that the device serves as a distraction leading to consequences.. We have to use research

    asked by Hm
  231. Physics help!!

    A team of dogs drags a 150 kg sled 1.39 km over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.236. The acceleration of gravity is 9.8 m/s^2. Find the work done by the dogs. Also, What is the energy

    asked by Elle
  232. s.s

    In which city do you find 5500 opportunity court? please help!

    asked by abduljabar
  233. Physics

    Pam has a mass of 44.0 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 22.0 m and Pam acquires a speed of 58.0 m/s.

    asked by Katie
  234. Chemisrty

    Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C. The vapor above this solutionis collected and condensed. Using the following data, determine the composition in mole fraction of

    asked by BB
  235. algebra

    How do you write a polynomial for the volume of a box?

    asked by Kam
  236. geometry

    the magnitude of a translation is 7x+3 inches . The distance between the parallel lines of reflection is 3x - 1. solve for x

    asked by Taylor
  237. STATISTICS QUESTION

    if i have x^2 = 20.303 with 9 degrees of freedom and a significance level of .05 how do i figure out the P-value and by X^2 i mean chi square

    asked by jabrony
  238. math

    (6c+3d)(7c-2d) how do i do this?

    asked by raluca
  239. physics

    Calculate F_{\rm A} and F_{\rm B} for the beam shown in the figure . The downward forces represent the weights of machinery on the beam. Assume the beam is uniform and has a mass of 260 kg.

    asked by axxis
  240. physics

    A 47 N box is pulled along a frictionless horizontal surface by a 25 N weight hanging from a cord on a frictionless pulley? What is the acceleration of the system (box and the weight)?

    asked by dw about it
  241. physics

    A rocket weighs 2.0 X 107 N. Its engines exert a force of 2.5 X 107 N at liftoff. What is the rocket's acceleration when it lifts off?

    asked by dw about it
  242. Grammar

    Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a

    asked by Gina
  243. math

    Emily sara and Samantha share 540 beads. em took 90, sara took 3 tiems as many as the total number if beads emily and samantha took. How many beads must sara give to samantha so that both receive the same number of beads?

    asked by samantha
  244. science

    Magnetisim is a type of

    asked by erika
  245. government

    Why does the electoral college not allow citizens living in U.S. territories to vote, as it is the only place in the universe (astronauts have voted) that U.S. citizens can't vote.

    asked by Nick
  246. media and american culture

    Do you think the Internet has created more harm than good to artists in the music industry? Explain your answer.

    asked by greg
  247. math

    18a^3 + 30a^2 / 3a

    asked by Megan
  248. statistics

    A set of data is normally distributed with a mean of 98 and a standard deviation of 15. What is the probability that the value from the data is less than 88 ? 

    asked by Anonymous
  249. Physics 12

    An alpha particle is accelerated by a voltage of 1.53*10^3 V and is then deflected by a magnetic field of strength 0.020 T into a circular path of radius 0.40 m. If the alpha particles have a charge of 3.2*10^-19 C, what is their mass?

    asked by erin
  250. Psychology Please Help!

    The salesperson in medication ads dresses to look like a doctor because: a. she has tested the product directly. b. the product was developed by physicians. c. FCC regulations demand this. d. the salesperson's credibility is enhanced. I think it is b but I

    asked by Anonymous
  251. geometry

    A swimming pool is 30 feet wide and 60 feet long. If it is surrounded by square tiles, each of which is 1 foot by 1 foot, how many tiles are there surrounding the pool?

    asked by Anonymous
  252. calculus

    A management consultant estimates that the number of hours,h, per day that employees work and their daily pay of p dollars are related by the equation 60h5 = 2,000,000 = p3. Find dh/dp at p = 200 and interpret your answer.

    asked by Tina Mae
  253. calculus

    An annuity has a differential equation of y'=4500+.035y, and an initial condition of y(0)=1000. Describe what is going on.

    asked by christine
  254. writing

    what are the persuasive techinques in writing such as bandwagon and testimonal and what do they mean?

    asked by Anonymous
  255. social studies

    "It is the case that good communicators advance more quickly in the company." Which of the following would be the best revision of this sentence? "It is the case that good communicators advance faster in the company." "It is true that good communicators

    asked by pam
  256. English

    Could someone explain to me why the word "like" is plural and not singular because I actually thought "like" was singular. And isn't "the girls" singular? "the girls like the movie"

    asked by Amy
  257. spelling

    the book says circle the vowel spellings coin would be oi house - oue or is therw something i am missing

    asked by daniel's mom
  258. social studies

    during a group meeting when they are each reading a draft of their formal report, Madiha and Anne realize that sometimes they have the word "there" correctly and sometimes the word should be "their". They use their word processor's "find" feature to help

    asked by pam
  259. chemistry

    what would be the possible limitations we might encounter in doing naphthalene sublimation?

    asked by meryanbel
  260. Algebra

    log[3](2x+8)+log[3](3x)=log[3](2) Need help with this one please, thanks.

    asked by MV
  261. Math -Trig Please help!

    At one time, Maple Leaf Village (which no longer exists) had North America’s largest Ferris wheel. The Ferris wheel had a diameter of 56 m, and one revolution took 2.5 min to complete. Riders could see Niagara Falls if they were higher than 50 m above

    asked by linda
  262. physics

    What speed would a fly with a mass of 0.71 g need in order to have the same kinetic energy as a 1250 kg automobile traveling at a speed of 11 m/s?

    asked by april
  263. calculus

    what is the exact area of f(x)= 4x+5 from x=1 to x=4 using the limit of an infinite sum method.

    asked by Regina
  264. Physics

    A satellite moves in a circular orbit around the Earth at a speed of 6.3 km/s. Determine the satellite’s altitude above the surface of the Earth. Assume the Earth is a homogeneous sphere of radius 6370 km and mass 5.98 × 1024 kg. The value of the

    asked by Sam
  265. Physics

    In the process of changing a flat tire , a motorist uses a hydraulic jack. She begins applying a force of F1=8.6N to the input piston. As a result, the output plunger applies a force of F2=305N to the car. The height difference between the input piston and

    asked by Sami
  266. Physics

    A solid object floats on ethyl alcohol, with 60.9% of the object's volume submerged. Find the density of the object.

    asked by Sami
  267. Physics

    When you take a bath, how many kilograms of hot water (50°C) must you mix with cold water (13°C) so that the temperature of the bath is 36°C? The total mass of water (hot plus cold) is 215kg. Ignore any heat flow between the water and its external

    asked by Sami
  268. Chemistry 1010

    Describe exactly how you would make 150.0g of a 4.00% (w/w) solution of NaBr in water ?

    asked by Lori
  269. college algenra

    it a log problem? e^x=87

    asked by bj
  270. Math

    "A ship leaves port on a bearing of 34.0 degrees and travels 10.4 mi. The ship then turns due east and travels 4.6 mi. How far is the ship from port, and what is its bearing from port?" I would like to know how the actual steps in finding the answer

    asked by Mei
  271. Physics

    The planet Krypton has a mass of 7.1 × 1023 kg and radius of 3.3 × 106 m. What is the acceleration of an object in free fall near the surface of Krypton? The gravita- tional constant is 6.6726 × 10−11 N · m2/kg2. Answer in units of m/s2

    asked by Sam
  272. Algebra

    A gardener is putting a wire fence along the edge of his garden to keep animals from eating his plants. -If he has 20 meters of fence, what is the largest rectangular area he can enclose? -What quadratic function represents the area of the garden? Thanks

    asked by Shadow
  273. Physics

    1.Two balls, each with a mass of 0.871 kg, exert a gravitational force of 8.23 × 10−11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6.673 × 10−11 Nm2/kg2. Answer in units of m I got .785 which is

    asked by Sam
  274. math

    8/10 = w/25 solve

    asked by issa
  275. grammar

    what is the adverb and verb for the sentence The players spent all day there.

    asked by jessica
  276. algebra

    bonnie is four years older than clyde. ten years she was twice his age. how old is bonnie?

    asked by Anonymous
  277. Physics

    A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.08 s. How much longer should the pendulum be made in order to increase its period by 0.31 s?

    asked by Anne
  278. Physics

    A vertical spring with a spring constant of 400 N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest. It collides with and sticks to the spring, which is compressed by 2.7 cm in bringing the

    asked by Anne
  279. chemistry

    What hybrid orbitals are used by nitrogen in the following species a) NH3 b) H2N-NH2 c) NO3

    asked by Sharon
  280. college algebra

    I think this is an exponential equation. I can not figure out how to put the equation into the TI-84 to get the approximate form 3/5 ln(5x-1)+1 =1.4 subtract 1 from sides and divide by 3/5 lh(5x-1)=0.6667 Put in logarithm form e^0.6667=5x-1 add 1 to both

    asked by Trish
  281. Math-Help asap please~

    For each function, the point given is the maximum or minimum. Use the difference quotient to verify that the slope of the tangent at this point is zero. a) f(x) = 0.5x^2 + 6x + 7.5; (-6, -10.5) Difference quotient is f(a + h) - f(a)/h m= f(a+h) - f(a)/h =

    asked by Jay
  282. Alg2

    what are the # of possibilities of buying 2 CD's from 10 that are on sale?

    asked by Rock
  283. algebra

    At an ice cream parlor, ice cream cones cost $1.10 and sundaes cost $2.35. One day, the receipts for a totalof 172 cones and sundaes were $294.20. How many cones were sold?

    asked by lindsey
  284. Chem 101

    At 600degrees Celcius, gaseous CO and Cl2 are mixed together in a 1.00 L closed container. At the instant they are mixed, their concentrations are CO=.25 mol/L and Cl2= .69 mol/L. After equilibrium is established, their concentrations are CO= .25 mol/L and

    asked by Joni
  285. geometry

    sam walkded15ft. up a ramp and discovered he was 9 ft above the ground. pam walked an additional 20ft up the ramp. how far above the ground is she?

    asked by Anonymous
  286. Physics

    a 59kg student jumped off the back of a 42kg sailboat, the boat was already travelling at 3.1m/s before she jumped. if she jumpped off with a speed of 2 m/s, how fast was the boat moving? thanks for any help

    asked by Josh
  287. arrays an expanded algorithm

    I need an example to help my son like 23x17

    asked by juan
  288. algebra

    How do you determine whether/how many nonreal solutions an equation has? The statement: x^3 - 4x^2 - 3x + 2 = 0 has two nonreal solutions is false How do I solve this?

    asked by Kim
  289. physics

    a 25kg object moving with a velocity of 3m/s to the right collided with a 15 kg object moving to the left at 6 m/s. determine the velocity of the 25kg object after the collision if 15kg object a. continued to move to the left, but only at .3m/s b.

    asked by connor
  290. Physics

    john and Sarah participated in a roller skating show. while 75kg john skated backwards at 3.00m/s, 60kg Sarah jumped into his arms with a velocity of 5m/s in the same direction. a. how fast did the pair roll backwards together? b. if john instead skated

    asked by phillip
  291. PSYCHOLOGY HELP PLEASE!!

    According to the mere exposure effect, we are most likely to feel attracted to people when: a. they are very similar to us. b. they are very different from us. c. we have never met them before. d. we have met them on previous occasions. I think it is a.

    asked by Anonymous
  292. chemistry

    how many gram of uranium will radiate the equivelent energy output of a major earthquake measuring 10^19J? Energy from fission of uranimu 223 is 10^-12.

    asked by ronnie
  293. chemistry

    A 210 g iron bar is heated and then placed in 100. g of water in an insulated container. The water temperature increases from 21.2 °C to 53.3 °C. What was the initial temperature of the iron bar? (Specific heats: cFe = 0.449 J/gK; cwater = 4.184 J/gK)

    asked by Faisal
  294. Environmental Science

    the Nitrogen, carbon, phosphorous cycles roll in the tundra

    asked by Donna
  295. Math

    9t^2-3t=0. Solve using quadratic formula

    asked by Jose
  296. Science

    A ball bounces up 28 centimeters after being dropped from a height of 2 meters. What percent of the potential energy is converted into kinetic energy on the bounce?

    asked by Jada
  297. math

    2sin2x+1=0

    asked by tyler
  298. English

    In the sentence, Shenika looks tired,what part of speech is tired?

    asked by dot
  299. physics

    need help quick: Magen's mass is 25 kg. She climbs the 4.5-m ladder of a slide, and reaches a velocity of 3.0 m/s at the bottom of the slide. How much work was done by friction on Magen?

    asked by Steve
  300. computer programming

    write a program that can read 10 interger values into an array and find the total for that array in the program , write 3 fiunctions: a function to read values , a function to find the total of element value and a function to print value

    asked by Anonymous
  301. College Algebra

    Suppose that you invest $6,000 at 2% interest compounded continu- ously. How much money will be in your account in 5 years?

    asked by Ddog
  302. Chemistry

    Explain how the calculated molarity of the potassium permanganate would be affected by each of the following experimental errors. In each case, you must also state if the calculated molarity is higher or lower than the actual morality. a) Some sodium

    asked by P102
  303. Math

    Find the equation of the diameter of the circle x^2+y^2-6x+2y=15, which, when produced, passes through the point (8,-2).

    asked by Jack
  304. computer programming c++

    write a program that can read 10 interger values into an array and find the total for that array in the program , write 3 fiunctions: a function to read values , a function to find the total of element value and a function to print value

    asked by shasha
  305. algebra

    how do i solve x+9>12?

    asked by lesa
  306. chemistry

    assume you had a solution that contained a mixture of a silver ions and stronium ions. come up with three different reaction plans that would allow you to precipitat either the silver ion or strontium ion, but the other ion would remain in solution

    asked by Colby
  307. calculus

    What is the area under each of the given curves? y=e^x/2 ; x=0 x=1

    asked by bob
  308. PSYCHOLOGY HELP PLEASE!!

    Research on interpersonal attraction has shown that people will be more attracted to each other if: a. they have totally opposite beliefs and personalities. b. their backgrounds, interests, and values are very similar. c. one of them is physically

    asked by Anonymous