Questions Asked on
November 8, 2011

  1. physics

    Two cars leave the same point at the same time, each travelling at the same constant speed and each having the same mass. The first car drives directly east, while the second car heads directly north. If the centre of mass of the two-car system is

    asked by john
  2. statistics

    The amount of corn chips dispensed into a 16-ounce bag by the dispensing machine has been identified at possessing a normal distribution with a mean of 16.5 ounces and a standard deviation of 0.1 ounce. Suppose 400 bags of chips were randomly selected from

    asked by UG
  3. Math 113

    Verify tanxsin2x = 2-2cos^2x

    asked by Jake
  4. physics

    The acceleration due to gravity at the north pole of Neptune is approximately 10.7 m/s^2. Neptune has mass 10^26kg and radius 25000km and rotates once around its axis in a time of about 16h. What is the gravitational force on an object of mass 4.8kg at the

    asked by omg
  5. math PLEASE HURRY

    there are 24 students in a science class. Mr. Sato will give each pair of students 3 magnets. So far, Mr. Sato has given 9 pairs of students their 3 magnets. homw many more magents does Mr. Sato need so that each pair of students has excatly 3 magnets.

    asked by jessica
  6. maths

    from the top of a light house the angle of depression of a ship sailing towards it was found to be 30 degrees . after 10 seconds the angle of depresion changes to 60 degrees. assuming that the ship is sailing at uniform speed. find how much time it will

    asked by pooja
  7. Physics

    When empty, a particular helicopter of mass 3770 kg can accelerate straight upward at a maximum acceleration of 1.32 m/s2. A careless crewman overloads the helicopter so that it is just unable to lift off. What is the mass of the cargo?

    asked by Rae
  8. physics

    When catching a baseball, a catcher's glove moves by 12 cm along the line of motion of the ball. If the baseball exerts a force of 463 N on the glove, how much work is done by the ball?

    asked by mike
  9. Chemistry

    Calculate the freezing of solution of 3.46 g of compound,X, in 160 g of benzen.when separated sample of X was vaporised, it density 3.27 g/L at 116 c and 773 torr. The freezing point of pure benzene is 5.45 c and Kf is 5.12 c/m.

    asked by Ethio
  10. trig

    a tree growing on a hillside casts a 102-foot shadow straight down the hill. Find the vertical height of the tree if, relative to the horizontal, the hill slopes 15.0 degrees and the angle of elevation of the sun is 62.0 degrees.

    asked by jc
  11. math

    Mary bought a roll of ribbon.After using 5/8 of the ribbon to decorate some packages,she had 15ft of the ribbon left.How many feet of ribbon did she buy?

    asked by lidia
  12. statistics

    The average score of all golfers for a particular course has a mean of 73 and a standard deviation of 3. Suppose 36 golfers played the course today. Find the probability that the average score of the 36 golfers exceeded 74.

    asked by Anonymous
  13. Calculus

    The circumference of a sphere was measured to be 81 cm with a possible error of 0.5 cm. Use linear approximation to estimate the maximum error in the calculated surface area

    asked by Emely
  14. statistics

    The below table shows the probabilities generated by rolling one die 50 times and noting the up face. What is the probability of getting an odd up face?

    asked by UG
  15. Math

    Classify triangle ABC by its sides if side AB = 6x, side AC = 4x + 6 and side BC = 8x + 3. The perimeter of triangle ABC is 63. Show all your work. Explain your reasoning.

    asked by Chris
  16. physics

    A child lifts a 5.0-newton toy to a height of 0.50 meters. How much work is done on the toy?

    asked by joe
  17. Chemistry

    Substance A has a normal fusion point of ‑10.0 oC, an enthalpy of fusion = 150.0 J g^-1; specific heats for the solid and the liquid are 3.00 and 6.20 J g^-1 oC^-1, respectively. How much heat, in J, is required to change 150 grams of A from a solid at

    asked by Kale
  18. geometry

    Point A is the incenter of (triangle) PQR. Find each measure. ARU AU QPK

    asked by Jordan
  19. statistics

    Assume that blood pressure readings are normally distributed with a mean of 123 and a standard deviation of 9.6. If 144 people are randomly selected, find the probability that their mean blood pressure will be less than 125

    asked by Anonymous
  20. statistics

    The owner of a computer repair shop has determined that their daily revenue has mean $7200 and standard deviation $1200. The daily revenue totals for the next 30 days will be monitored. What is the probability that the mean daily revenue for the next 30

    asked by UG
  21. geometry

    An equilateral triangle has sides that measure 5x+3 units and 7x-5 units. What is the perimeter of the triangle?

    asked by Julie
  22. statistics

    The breakdown of workers in a particular state according to their political affiliation and type of job held is shown here. Suppose a worker is selected at random within the state and the worker's political affiliation and type of job are noted. Given the

    asked by ify
  23. Statistics

    (a) If 10 auto insurance claims are taken at random, use the binomial distribution to determine the probability that: (i) at least 6 claims are fraudulent (ii) at most 3 claims are fraudulent (iii) anywhere between 5 and 8 (inclusive) claims are fraudulent

    asked by Anonymous
  24. Physics

    Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except that one is made of wood (mass = 0.17 kg) and the other of metal (mass

    asked by Anonymous
  25. Grammar

    Agreement questions. 1. A number of small bruises __________ present upon examination. A) was B) were 2. A) The patient was brought to the operating room, and we induced general endotracheal anesthesia, and then prepped and draped in the usual sterile

    asked by Cindy
  26. physics

    A bullet of mass 4.7 g is fired horizontally into a 2.4 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.28. The bullet stops in the block, which slides straight ahead for 2.2 m (without

    asked by Mark
  27. physics

    Two cars leave the same point at the same time, each travelling at the same constant speed and each having the same mass. The first car drives directly east, while the second car heads directly north. If the centre of mass of the two-car system is

    asked by henry
  28. Algebra

    A tourist bus leaves Richmond at 1:00 P.M. for New York City. Exactly 24 minutes later, a truck sets out in the same direction. The tourist bus moves at a steady 60km/h. The truck travels 80km/h. How long did it take the truck to overtake the bus.

    asked by Jonny
  29. Algebra

    Can you please check my work? You have helped other students I know. Thank you:) Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x -

    asked by Sharon (ms. Sue)
  30. Biology

    7) The dumping of large amounts of raw sewage into rivers or lakes typically leads to massive fish kills, although sewage itself is not toxic to fish. Similar fish kills also occur in shallow lakes that become covered in ice during the winter. What kills

    asked by Cassie
  31. algebra

    find the length x in the figure a shape like a shoe with x on top, 10 cm to the height, 6cm on the lace shoes and x in the front shoes.the area of the shaded region is given 144 cm square.

    asked by lan
  32. Calculus

    If the equation of motion of a particle is given by s = A cos(ωt + δ), the particle is said to undergo simple harmonic motion. (a) Find the velocity of the particle at time t. s'(t) = - A ω sin(ωt + δ) I figured out how to do part a, but I don't know

    asked by nyk
  33. math

    Two cards are selected at random without replacement from a well-shuffled deck of 52 playing cards. Find the probability of the given event. (Round your answer to three decimal places.) find the probability that A pair is not drawn.

    asked by Rico
  34. Physics

    Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except that one is made of wood (mass = 0.17 kg) and the other of metal (mass

    asked by Anonymous
  35. geometry

    Joey says that triangle XYZ is obtuse. Robin disagrees because there are more acute angles then there are obtuse angles therefore it must be acute. Is either one of them correct? Explain your reasoning.

    asked by Kodah
  36. math

    a man walked for some distance at 8km/h, and for an equal distance at 5km/h. the total time he took was 3 1/4 hours. find the distance he walked

    asked by Anonymous
  37. physics

    A cart connected to a spring oscillates according to the following position equation: x = 0.20m cos (8 t) What is the period of this oscillation? What is the cart's velocity after 4 seconds?

    asked by jason
  38. Precal

    .Pump Jack Problem: An oil well pump jack is shown in Figure 3-9f. As the motor turns, the walking beam rocks back and forth, pulling the rod out of the well and letting it go back into the well. The connection between the rod and the walking beam is a

    asked by Matt
  39. Physics

    What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 28 km/h and the μs between tires and track is 0.28? (Answer must be in meters)

    asked by Ian
  40. Geometry

    Find the area of the trapezoid. L1 = 23ft, L2 = 15ft, H = 12ft Is 228 ft the correct answer?

    asked by Mindy
  41. Chemistry

    A pure sample of (R)-limonene has a specific rotation of +125.6. If a sample had a specific rotation of +35.6, how much of each enantiomer is present in the sample? Show your work. I don't even know where to begin....please help :(

    asked by Adrianna
  42. math

    You buy a bottle of juice for $1.00. The juice costs .90 cents more than the empty bottle. How much does the empty bottle cost?? The answer is not 10 cents, or $1.00

    asked by sarah
  43. algebra

    Baking Cookies-Word Problem Our class planned a party for disadvantaged kids. Some of us baked cookies for the party. On the day of the party, we found we could divide the cookies into packets of two,three, four, five or six and have one cookie left over

    asked by Linda
  44. college math excursions

    what is the next number sequence for 0,10,24,56,112,190

    asked by jane
  45. physics

    Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 1.85 104 Pa, and the pipe diameter is 5.0 cm. At another point y = 0.30 m higher, the pressure is P2 = 1.05 104 Pa and the pipe

    asked by Anonymous
  46. physics

    Water flows over a section of a waterfall at the rate of 5.4 104 kg/s and falls 38 m. How much power is generated by the falling water?

    asked by dale
  47. Physics

    A water skier, moving at a speed of 8.36 m/s, is being pulled by a tow rope that makes an angle of 33.4 ° with respect to the velocity of the boat (see the drawing). The tow rope is parallel to the water. The skier is moving in the same direction as the

    asked by Elizabeth
  48. physics

    two tractors pull against a 1000 kg log. if the angle of the tractors chains in relation to each other is 18 degrees and each tractor pulls with a force of 800N what forces will they be able to exert

    asked by payton
  49. Physics

    This problem compares some energy properties of two motor vehicles: For efficient car, use drag coefficient of .21 and a cross sectional area of 1.5m^2. For a light truck, use drag coefficient of .75 and a cross sectional area of 2.7m^2. Use 1.25 kg/m^3

    asked by Lo
  50. algebra

    I have no clue where to begin on this problem. Can some one help me please. One demographer believes that the population growth of a certain country is best modeled by the function P (t) =15 e^.08t, while a second demographer believes that the population

    asked by Jessica
  51. physics

    A ball is projected horizontally from the edge of a table that is 1.49 m high, and it strikes the floor at a point 1.01 m from the base of the table. The acceleration of gravity is 9.8 m/s 2 . What is the initial speed of the ball? Answer in units of m/

    asked by light
  52. Chemistry

    An aqueous solution of potassium hydroxide is mixed with an (aq) of magnesium chloride and you get a clumpy white precipitate that forms. Write a complete and balanced equation to calculate the stoichiometry question: how many grams of the precipitate are

    asked by Susan
  53. chemistry

    What is the oxidizing agent in the following reaction? Cl2 (g) + 2Na+ (aq) + 2Br- (aq) --> 2Na+ (aq) + 2Cl- (aq) + Br2 (l)

    asked by mary
  54. chemistry

    A 5 mL sample of an unknown liquid is placed into a 250 mL flask that has had all of the air removed. The pressure measured in the flask is found to be 39.9kPa. In a separate trial the student puts 214 mL of the same liquid into the same flask at the same

    asked by JS
  55. Physics

    A horizontal force of 150 N is used to push a 43.5 kg packing crate a distance of 5.30 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150 N force (b) the coefficient of kinetic

    asked by Raqual
  56. Chemistry

    Calculate the pH of the following 0.0500 M H3AsO4 and 0.0500 M NaH2AsO4?

    asked by Jessica
  57. 6th grade ELA

    an implied main idea is _______________ in a paragraph. can someone help me with this fill in the blank question???

    asked by Kate
  58. algebraic expressions

    there are 24 students in a science class. Mr. Sato will give each pair of students 3 magnets. So far, Mr. Sato has given 9 pairs of students their 3 magnets. homw many more magents does Mr. Sato need so that each pair of students has excatly 3 magnets.

    asked by kayla
  59. Physics

    A 85.0 N weight is held in the hand. The upper arm makes an angle of 32.0° with the vertical, and the lower arm is 10.0° above the horizontal. Find the tension in the biceps tendon. See figure below.

    asked by Kellie
  60. geometry

    Which of the following statements is true?Select one of the options below as your answer: A. A 25o angle is congruent to a 25o angle. B. Two intersecting lines form two pairs of congruent angles. C. It is possible for congruent angles to add up to 90o. D.

    asked by angelique
  61. Biology

    6) In detective novels, “the odor of bitter almonds” is the tell-tale clue to murder by cyanide poisoning. Cyanide works by attacking the enzyme that transfers electrons from the respiratory electron transport chain to O2. Why is it not possible for

    asked by Cassie
  62. human relations

    learning is generally considered a lasting change in behavior based on a) practice and experience b) practice and challenge c) challenge and experience d.) challenge and reinforcement

    asked by Teweety
  63. Pre-Algebra

    Ok so im in 7th grade and can somone help me with pizzazz worksheet #40? Pretty please?

    asked by Emily
  64. Physics

    A 235-g block is pressed against a spring of force constant 1.55 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal. Using energy considerations, determine how far up the

    asked by marvin
  65. CHEM

    Compare the value you obtained from average bond energies: (260Kj) to the actual standard enthalpy of formation of gaseous benzene, 82.9 kj. What does the difference between these two values tell you about the stability of benzene?

    asked by ALISON
  66. algebra

    Evaluate 5x-3y x=3 and y=4 ----- 7

    asked by Angela
  67. Algebra word problem

    Baking Cookies-Word Problem Our class planned a party for disadvantaged kids. Some of us baked cookies for the party. On the day of the party, we found we could divide the cookies into packets of two,three, four, five or six and have one cookie left over

    asked by Linda
  68. physics

    Problem 17.8 Light from a sodium lamp (wavelength = 598) illuminates two narrow slits. The fringe spacing on a screen 150 cm behind the slits is 4.0 mm . Part A - What is the spacing (in mm ) between the two slits? Express your answer using two significant

    asked by Paige
  69. physics

    If a man has an average useful power output of 31 W, what is the minimum time, in s, it would take him to lift fifty 12.3 kg boxes a height of 2.3 m. i'm not sure how to go about it if anyone can help me Thanks

    asked by henry
  70. Chemistry

    Calculate the pH of the following 0.0500 M H3AsO4 and 0.0500 M NaH2AsO4?

    asked by Jessica
  71. PROBABILITY MATH

    A batch consists of 12 defective coils and 88 good ones. find the probability of getting two good coils when two coils are randomly selected if the first selection is replaced before the second is made. Help me.. since it would be replaced would the answer

    asked by HM
  72. trig

    Two office towers are 43m apart. From the top of the shorter tower, the angle of elevation to the top of the taller tower is 26o while the angle of depression to the base is 51o. Determine the height of each tower and round your answers to one decimal

    asked by max
  73. physics

    A weight (with a mass of 71 kg) is suspended from a point near the right-hand end of a uni- form boom with a mass of 51 kg . To support the uniform boom a cable runs from this same point to a wall Vertical Height (m) is 7 Horizontal Distance (m) 6 and by a

    asked by Marti
  74. 6th grade ELA

    Main ideas are __________________. Can someone please help me with this fill in the blank question???

    asked by Kate
  75. physics

    What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s.

    asked by Lydia
  76. 6th grade ELA

    An implied main idea is _______________ in a paragraph.You have to ask yourself:What do all the supporting details add up to? Can someone please help me with this fill in the blank question???

    asked by Kate
  77. Chemistry

    Calculate the pH of a solution made with 0.240 M H3PO3 and 0.480 M NaH2PO3.

    asked by Jessica
  78. Ohm's LAW ELECTricity shop

    what is the resistance if a circuit with 120v and 5A its 24 how do i make a diagram of a circuit based on the info above

    asked by Adam
  79. physics

    Two dogs pull on a toy. One pulls with a force of 10 N, the other with a force of 15 N. (a) In what relative directions can the dogs act to give the toy the smallest acceleration?

    asked by Hannah
  80. statistics

    A manufacturer wishes to estimate the reliability (in months) of a certain product. An estimate of the population standard deviation from a previous sample was 12 months. If the manufacturer desires to be within 4 months of the true value with

    asked by Larry
  81. Calculus

    Show that limit as n approaches infinity of (1+x/n)^n=e^x for any x>0... Should i use the formula e= lim as x->0 (1+x)^(1/x) or e= lim as x->infinity (1+1/n)^n Am i able to substitute in x/n for x? and then say that e lim x ->0 (1+x/n)^(1/(x/n)) and then

    asked by Frederick E.
  82. statistics

    time required to complete a statistics exam is uniformly distributed between 60 and 150 minutes. What is the probability that a student will take longer than 120 minutes to complete the exam

    asked by deena
  83. world history

    How did powerful families of Japan like the Fujiwara legitimate their power at court?

    asked by brittany
  84. Statistics

    In a population of 240 women,the heights of the women are normally distributed with a mean of 64.2 inches and a standard deviation of 3.2 inches. If 36 women are selected at random, find the mean mu x and stand deviation sigma x of the population of sample

    asked by Joe
  85. chemistry

    Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete

    asked by BOB PLEASE HELP!:)
  86. Physics

    A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 63.6-kg water-skier has an initial speed of 5.3 m/s. Later, the speed increases to 10.8 m/s. Determine the work done by the

    asked by Gabby
  87. Math

    one angle of a triangle is 90 degrees. If the ratio of the legs i 1:1, what are the mesuares( in degrees) of the 2 remaining angles?

    asked by Maria
  88. chemistry

    DOES H3PO4 HAVE A pH greater than 7 or less than 7

    asked by denis
  89. physics

    A 29 g rubber bullet is travelling to the right at 200 m/s, when it hits a 1.1 kg block of wood sitting on a horizontal frictionless surface. If this collision is inelastic (though not perfectly inelastic), and the velocity of the block of wood after the

    asked by Lydia
  90. Please Help!!!!!!

    From the top of a lighthouse 55ft above sea level, the angle of depression to a small boat is 11.3 degrees. How far from the foot of the lighthouse is the boat?

    asked by Ashley
  91. Algebra (check my answers)

    Please check these answers. Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x - 12y - 5 Evaluate the expression 3x2y when x = 3 and y

    asked by Sharon
  92. statistics

    If one card is drawn from a standard 52 card playing deck, determine the probability of getting a jack, a three, a club or a diamond. Round to the nearest hundredth

    asked by ify
  93. algebra word problem

    can youcheck these write a 2 step equation: half a dollar minus five dollars equals fifteen dollars: n/2 -5 = 15 five hours more than one half of an hour equals fifteen hours: n/2 + 5 = 15 two less than three times the number of feet of fencing required

    asked by marko
  94. Chemistry

    When looking at the Periodic Table, the oxidation state of hydrogen is +1; however my teacher told me that the net charge of hydrogen is 0. I do not understand why this is? Also, How may one calculate the charge of an element if only given the number of

    asked by Lesly
  95. HIS 204

    In many ways after the divisiveness and devastation of the Civil War, the United States searched for order economically, politically, geographically, socially and racially. Select one of these areas, or suggest another, and make a case for the reasons why

    asked by Bethe
  96. math

    a developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 336 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed and what are the dimensions

    asked by Jessica
  97. Physics

    A 235-g block is pressed against a spring of force constant 1.55 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal. Using energy considerations, determine how far up the

    asked by marvin
  98. language arts

    pick out the verbs and rewrite in standard English. Kevin went to borrow books from the library. when he got home he found that some pages were torn out and others were missing an med the spine of one was twisted.He took the books back to the library and

    asked by Oracabessa primary school
  99. calculus

    The total cost of producing x units is C(q) = 2q3- 6q2-18q+108 (a) At what level of production will the total cost be minimized? (b) At what level of production will the marginal cost be minimized? (c) At what level of production will the average cost be

    asked by Anonymous
  100. PHYSIC

    1)What must be the orbital speed of a satellite in a circular orbit 740 above the surface of the earth? 2)What is the period of revolution of a satellite with mass that orbits the earth in a circular path of radius 8000 (about 1630 above the surface of the

    asked by Ruth
  101. Calculus

    The circumference of a sphere was measured to be 81000 cm with a possible error of 050000 cm. Use linear approximation to estimate the maximum error in the calculated surface area.

    asked by Emely
  102. Calc

    definite integral from 0 to 1 of 5xln(x+1)dx

    asked by Ed
  103. writing

    is this a correct way to write this sentence Mother sewn fur jackets for Father and I, just in case the weather gets bad. thank you!

    asked by Sara
  104. physics

    A drag racer accelerated from 0 to 475km/h in 4.88 s. Assuming a constant acceleration, how far did it travel?

    asked by na
  105. Calculus

    I seriously do not understand anything about this problem Please help. The equation of an ellipse centered at the origin is (x^2/a^2) + (y^2/b^2)=1 The area of the upper half of the ellipse can be determined by finding the area between the ellipse and the

    asked by Angel
  106. physics : HELP PLEASE

    A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

    asked by kim
  107. physics

    Assume you are given two objects whose centre of mass is located exactly at the origin. The first object has a mass of 33 kg and is located at position +30 m with respect to the origin. If the mass of the second object is 7.0 kg, what is its position (in

    asked by Lydia
  108. Science

    Are all tornadoes cyclones. I have read many sites some say they are others say no. Can someone give me an accurate site please

    asked by Sue
  109. Math

    Find the three geometric means between -2 and -32. Show the work that leads to your answer

    asked by Jazmine
  110. science

    I have been searching for a website that tells me about soil and its properties but i cant find one, but my friend recommended Jishka so i am asking if i could get a link???please it would be a huge help ~

    asked by Abigal
  111. Math

    The reason I ask this question "What multiplication fact can be found by using the arrays for 2x9 and 5x9 ?" because I want to understand what exactly it mean, Then I could help my son to do the homework. This is not my son post it to ask you. Thanks.

    asked by Hong
  112. Math

    solve for 9x-21y=28 -9x+21y=21 in elimination method

    asked by Jason
  113. math

    Lily has 5 apples. She and 4 friends want to share them equally. Which rule of division can help Lily know quickly if everyone can have an apple?

    asked by Anonymous
  114. Algebra -- Mrs Sue can you help

    can youcheck these write a 2 step equation: half a dollar minus five dollars equals fifteen dollars: n/2 -5 = 15 five hours more than one half of an hour equals fifteen hours: n/2 + 5 = 15 two less than three times the number of feet of fencing required

    asked by MarKo
  115. Physics

    A horizontal force of 150 N is used to push a 43.5 kg packing crate a distance of 5.30 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150 N force (b) the coefficient of kinetic

    asked by Raqual
  116. Science 6TH Grade

    What would the application be to my experiment which was "We dig through soil and check for inorganic and organic matter in the soil and look for natural things in the soil(ex; beans,feather,rocks,sticks,and grass)" Please help! ive been on this for 4

    asked by Hilga
  117. Chemistry

    C2H5O2N is an important compound. The combustion reaction of glycine proceeds according to this equation: 4C2H5O2N + 9O2 ---> 8Co2 +10H2O +2N2 which is = -3857 kJ Given CO2 is -393.5 kJ/mol Given H2O is -285.6 Calculate the standard molar enthalpy of

    asked by Izzie
  118. physics

    . A ball, initially at rest at t= 0 seconds, rolls with constant acceleration down an inclined plane 10 meters long. If the ball rolls 1 meter in the first 2 seconds, how far will it have rolled at t= 4 seconds?

    asked by Anonymous
  119. chemistry(rusting)

    i know that metal placed in more acidic solution will produce rust faster.but why metal placed near the sea shore will easily have rust?the wind with moisture which contains salt solution,right? however ,i have a problem.When i put the metal in the test

    asked by Kong
  120. physics

    Assuming maximal power output, how long, in seconds, would it take a 1,535 kg car with a 128 hp engine to accelerate from 50 km/h to 102 km/h? (1 hp = 746 W)

    asked by Lydia
  121. physics

    Ian is firmly attached to a snowboard which is on a flat surface of ice, which you can assume to be frictionless. He and the snowboard are initially at rest. He then throws a 138 g ball which travels at a speed of 19.2 m/s, and finds himself moving

    asked by Lydia
  122. literature

    What are two things that can be a symbol of courage?

    asked by clare
  123. Algebra II

    Express as a single logarithm with a coefficient of 1. Assume that the logarithms in the given problem have the same base. 4log a-3log b+5log c

    asked by Arielle
  124. Algebra

    A car started out from Memphis toward Little Rock at the rate of 60km/h. A second car left from the same point 2 hours later and drove along the same route at 75km/h. How long did take the second car to overtake the first car.

    asked by Jonny
  125. physics

    a rock is dropped off a cliff. after 4s, what is the rocks velocity? how far did the rock fall?

    asked by kyla
  126. social studies

    Why did the English and Spanish want colonies in America?

    asked by terry
  127. Algebra

    A stop sign has the shape of an octagon with each side measuring 0.5 ft. To make a scale model of the sign, every dimension is multiplied by 1/20. How is the ratio of the areas related to the ratio of the corresponding dimensions? What is the ration of the

    asked by Kylie
  128. Biology

    3) How many carbon dioxide molecules are liberated after each cycle of the Krebs cycle? For a single glucose how many carbon dioxide molecules were already liberated by the aerobic respiration at that point?

    asked by Cassie
  129. COM 156

    What websites do you normally frequent? Are these websites credible? When is credibility more important and when is it less important? Support your answers with specific examples

    asked by cassandra
  130. Math

    Find the double integral of f (x, y) = (x^7)y over the region between the curves y = x^2 and y = x(3 - x).

    asked by Josh
  131. physics

    water is being heated in a large beaker. there is a bunsen under it. if a second bunsen was added bellow the largest beaker, what affect would this have? why? (refer to particle behaviour)

    asked by lissa
  132. physics

    An object is projected with velocity of 100m/s from the ground level at an angle tita at the vertical,if the total thme is 10s.calculate tita(g=10m/s)

    asked by Marnal
  133. ALgebra pls check -

    can youcheck these write a 2 step equation: half a dollar minus five dollars equals fifteen dollars: n/2 -5 = 15 five hours more than one half of an hour equals fifteen hours: n/2 + 5 = 15 two less than three times the number of feet of fencing required

    asked by MARKO
  134. physics

    A motor car in rectilinear motion steadily decelerates to rest in 20s.Using Newton's second law of motion,explain why a higher force is required to stop the car in 10s than in 20s.

    asked by Marnal
  135. physics.pls help

    Participants in a road race take water from a refreshment station and throw their empty cups away farther down the course. If a runner has a forward speed of 6.20m/s, how far in advance of a garbage pail should he realease his water cup if the vertical

    asked by ted
  136. Math

    What is the standard deviation to two decimal places for the following data: 4 6 7 4 5

    asked by Anthony
  137. recalus

    find the component f and d , so that fog =H H(x)=log-3 e^x

    asked by tina
  138. physics

    A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

    asked by kim
  139. Chemistry

    I have a compound (mx) weak acid (x- = Hx) mx in 5M strong acid solution solubility = 5x10(-3) Ksp = 1x10(-20) Find Ka... I need to know where to start

    asked by Chris
  140. algebra

    A drawer contains 2 black sock, 8 gray saocks, and 3 blue socks. Without lookign you draw out a sock and the4n draw out a second sock without returning the first sock. What is the probability that the two socks you draw arer a matching pair?

    asked by l kaljfd
  141. University Maths

    Find the area enclosed between the ffg curves :- y=lnx and y= -2x+3 and the ordinate x=3

    asked by H.A.
  142. writing sentences and paragraph

    i need help on my assignment , please correct where i am wrong . Assignment You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for

    asked by louise
  143. chemistry

    WHAT PROPERTY OF SOLUTION IS DESCRIBED BY ITS pH?

    asked by denis
  144. World History

    What types of civilizations did the English and Spanish settlers discover in the Americas? How did their views and customs affect the development of America?

    asked by Mia
  145. math

    . On a day with no wind, a hot-air balloon hovers at a point above a long, straight river. On the west side of the balloon, a sailboat is spotted in the river at an angle of depression of 48o. On the east side, a canoe spots the between at an angle of

    asked by max
  146. inventory management decison model

    Develop mathematical functions that compute the annual ordering cost and annual holding costs based on average inventory held throughout the year in order to arrive at a model for total cost.

    asked by Anonymous
  147. math

    Gemma says that a regular polygon cannot have an exterior angle of 25 degrees. Is she correct? Explain your answewr.

    asked by G
  148. chemistry(rusting)

    i know that metal placed in more acidic solution will produce rust faster.but why metal placed near the sea shore will easily have rust?the wind with moisture which contains salt solution,right? however ,i have a problem.When i put the metal in the test

    asked by Kong
  149. chemistry(rusting)

    i know that metal placed in more acidic solution will produce rust faster.but why metal placed near the sea shore will easily have rust?the wind with moisture which contains salt solution,right? however ,i have a problem.When i put the metal in the test

    asked by Kong
  150. chemistry(rusting)

    i know that metal placed in more acidic solution will produce rust faster.but why metal placed near the sea shore will easily have rust?the wind with moisture which contains salt solution,right? however ,i have a problem.When i put the metal in the test

    asked by Kong
  151. algebra

    P. 620 #56. Predicting Home Prices Selling prices of homes can depend on several factors such as size and age. The accompanying table shows the selling price for three homes. In this table, price P is given in thousands of dollars, age A in years, and home

    asked by genie
  152. Algebra II

    Solve for X. Give exact answer in form of fraction. ln 27+ln(x-8)=ln(9x-8)

    asked by Arielle
  153. Algebra II

    Solve for X. log(x^2-9)-1=log(x+3)

    asked by Arielle
  154. physics

    If a man has an average useful power output of 31 W, what is the minimum time, in s, it would take him to lift fifty 12.3 kg boxes a height of 2.3 m. i'm not sure how to go about it if anyone can help me Thanks

    asked by henry
  155. English

    Could you please check these sentences? Thank you very much. 1)Lady Macbeth doesn't display stereotyped female behaviour and poses. 2) Actually, she is not the complement to her husband but rather the driving force of the play. 3) She is even more

    asked by Henry2
  156. College economics

    The long-run supply curve for a good is a horizontal line at a price $3 per unit of the good. The demand curve for the good is QD = 50-2P. (a) What is the equilibrium output of the good? (b) A $1 excise tax is imposed on the good. What will be the long-run

    asked by Byron
  157. 8th Grade/Art

    My sister is gradating grade 8th this year and she wants to create her own 8th grade yearbook using a "marble notebook" she doesn't want to use a scrapbook she need cover ideas memorable quotes and funny ideas background ideas (when putting pictures she

    asked by Laruen
  158. algebra

    if a piece of wood is 2 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece?

    asked by Aldwin
  159. Biology

    2) Why can it be said that each glucose molecule runs the Krebs cycle twice?

    asked by Cassie
  160. Science

    Different kinds of sedimentary rocks exist because A. they were formed in different places B. their formation took different lengths of time C. they were formed by sediments from different rocks D. they have been cut differently I THINK ITS C is that

    asked by Bob
  161. geometry

    the ratio of the area of a smaller triangle to the area of a larger triangle is 1:4. if the are of the smaller triangle is 30, find the area of the larger triangle.

    asked by :)
  162. English

    When writing a story where the characters are talking, is it a new paragraph each time a different character speaks? Specifically the following: Paragraph describes the kids in the story and talks about them trick or treating and that they are now heading

    asked by Patty
  163. English

    Which sentence is correct: I wanted to tell you something before I head to town. or I wanted to tell you something before I headed to town. I think it is the first one, but I'm not sure.

    asked by Anonymous
  164. Living Environment

    having a hard time finding this information on google and i really need help for some questions. What are 3 abiotic factors that influence the: Highlands of Ethiopia Patagonia The Rockies Pakistan and the Himalayas Forests of Eastern China

    asked by JB
  165. Geometry

    Find the perimeter of the trapezoid. L1 = 9.65 yd, L2 = 9.25 yd, L3 = 10.12 yd, and L4 = 6.20 yd Can you please explain how I answer this? Thank you kindly:)

    asked by Mindy
  166. Geometry

    Find the area of the rectangle. L = 13m and H = 3m Do I multiply or do I add?

    asked by Mindy
  167. algebra

    Rationalize the denominator, assume that all expressions under radicals represent postive numbers. sqrt:a - sqrt:b/sqrt:a + sqrt:b

    asked by Smith
  168. Science

    An Olympic bobsledder pushes a 200 kg bobsled at 8 m/s. If the man pushes with a force of 1200 N, how much force of friction is present?

    asked by Kyle
  169. Geometry

    Find the area of the trapezoid. L1 = 23ft, L2 = 15ft, H = 12ft Is 456ft the correct answer?

    asked by Mindy
  170. mercy land

    the 2nd, 3rd, and 4th term of an arithemetic progression are x-2, 5 and x+2 respectively, calculate the value of x and hence find the 20th term..

    asked by victor
  171. Geometry

    Find the missing side. Approximate the answer to three decimal places when appropriate. A = 15 yd C = 25 yd I have no clue on how to do this one. Please any help would be appreciated.

    asked by Mindy
  172. English

    I forgot to add the following sentences. Thank you. 1) When they came back home, they were much more respectful of their parents,didn't use any bad language and behaved correctly in class. 2) Their week (out of home)taught them to trust themselves and

    asked by Henry2
  173. Spanish

    I asked this question yesterday but I'm still not sure. I have to finish off saying a person has a pain in a certain part of their body. Like A mi me duele la boca.(accent over i in mi) I have to finish a pain in the head for "A nosotros so I would say A

    asked by Ben.
  174. Math Garde 3

    What multiplication fact can be fuond by using the arrays for 2x9 and 5x9 ?

    asked by Hong
  175. science plz

    Please can you describe the organic and inorganic properties of soil, i need help for my statement of purpose?!?

    asked by Kyle McEwan
  176. HIS 204

    Every era in American history has had notable men and women who shaped their times, for better or worse. Identify one person from this week’s reading who you believe had a significant impact on the years from 1945 to 1974. This could include a president

    asked by aeh2011
  177. Physics

    If the resistance of each of the light bulbs is 6.0 ohms, what resistance does the battery see?

    asked by Elisabeth
  178. algebra3

    Why isn't the absolute value inequality (x^2-1)

    asked by Joe
  179. writing

    is there another way to rephrase this sentence in a good way. --- All I ever heard about this Grand Canyon thing was that it is piled up with humongous rocks and composed of fossils. thank you!

    asked by Sara
  180. algebra

    negative five divided by negative three minus two times negative one third minus twenty one divided by seven

    asked by kyla
  181. math

    In December Corey took out a 1000-dollar loan with monthly interest rate 0.7 percent. In order to pay back the loan, Corey has been paying $87.17 a month since January. Explain why the sequence defined recursively x0=1000 and xn=1.007(xn-1) for positive n

    asked by Danielle
  182. physics

    A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

    asked by kim
  183. algebra

    Katydid population is modeled by N(t) = 50 / 1+9e^ -.33t where t is number ofyears and N(t) is population is thousands at time t. when will katydid population reach 40,000? I somehow got a negative log, producing an error so i can't go any farther. Please

    asked by k
  184. math

    The equation of linear funtions

    asked by Polly
  185. Math - Calculus III

    Find the double integral of f (x, y) = (x^7)y over the region between the curves y = x^2 and y = x(3 - x).

    asked by Josh
  186. physics

    A pulley system is 76% efficient. If a 9000 kg box is lifted a distance of 8 m by a force of 700 N, how much rope is pulled from the pulley system?

    asked by luke
  187. physics

    If an automobile engine delivers 46.0 hp of power, how much time will it take for the engine to do 5.30 x 10^5 J of work?

    asked by jim
  188. MATH

    HOW DO I COME UP WITH THE REAL NUMBERS FOR X-2Y=200 THE REAL NUMBERS FOR X AND Y

    asked by angela
  189. Algebra word problem

    A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone

    asked by Linda
  190. Math

    If two of the line segments of a polygon are parallel, what is the least number of sides it could have?

    asked by Nelson
  191. nutriction and wellness

    Using the Dietary Guidelines for Americans, 2005 (particularly chapters 5 through 8) as a reference, evaluate the 3 web-based nutrition sites listed below. Explain why you think the information is accurate or not. Three web-based sites to evaluate: Good

    asked by mike
  192. physics

    It Takes 2 N of force to get a 15 kg object to move horizontally on a surface. What is the normal force of the surface on the object?

    asked by Kai
  193. world history

    what are 2 cause and effects of queen elizebeth the 1st dying

    asked by brandon
  194. physics : HELP PLEASE

    A ball rolls along a desktop with an uniform velocity of 3 m/s. What is the displacement after 10 seconds have passed? A ball is thrown upward with an initial velocity of 18 m/s? What is the maximum height the ball reaches if the ball is assumed to leave

    asked by kim
  195. Math

    Please check my work. 1) 64 divide -4 = -16 2) -144 divide (-9) = 16 3) Simplify -9 and a small 2 = -81 4) Simplify (-3) and a small 3 = -27 5) Add -4/11 + 5/11 = 1/11 6) subtract 5/11- [-3/11] = 8/11 7) multiply [-7/8] • [-2/4] = 7/16 8) divide -3.5

    asked by Ruby
  196. chemistry

    DOES Mg(OH)2 HAVE A pH greater than 7 or less than 7

    asked by denis
  197. Staistics

    17 green marbles and 14 white marbles what is the probability of choosing a white marble first chosen without replacement was a green marble

    asked by Reese
  198. algebra

    Katydid population is modeled by N(t) = 50 / 1+9e^ -.33t where t is number ofyears and N(t) is population is thousands at time t. when will katydid population reach 40,000?

    asked by kd
  199. Science

    What would the application be to my experiment which was "We dig through soil and check for inorganic and organic matter in the soil and look for natural things in the soil(ex; beans,feather,rocks,sticks,and grass)" Please I need your help URGENT! ! !

    asked by Hilga
  200. Math, Please Help!!!

    a boat on a river has a 27 degree angle of elevation to the top of a dam and the dam is 1037ft from the river.How far is the boat from the base of the dam. is the answer sin27 degrees = 1037/x. =x =1037/sin27 degrees?

    asked by Misty
  201. Algebra

    Use the FOIL method to find the product (3x^2-5)(x^5-9)

    asked by Sam
  202. Algebra

    Target Heart Rate (Refer to the preceding exercise.) A target heart rate T that is half a person’s maximum heart rate is given by T=110-1/2A, where A is a person’s age. (a) What is T for a person 30 years old? 50 years old? (b) Sketch a graph of the

    asked by genie
  203. Algebra II

    Solve for X to three significant digits. 9^(2x)=11^(3x-2)

    asked by Arielle
  204. statistics

    A sample of 275 shoppers at a large suburban mall were asked two questions: (1) Did you see a television ad for the sale at department store X during the past 2 weeks? (2) Did you shop at department store X during the past 2 weeks? The responses to the

    asked by UG
  205. chemistry

    Calculate the pH of a solution made with 0.0600 M carbonic acid, H2C03 and 0.0300 M NaHCO3.

    asked by Jessica
  206. physics

    an atv with a velocity of 22m/s is accelerated uniformly at the rate of 2m/s squared for 5s. What is it's finaly velocity?

    asked by kyla
  207. English

    I forgot to add the following sentences. Thank you very much. 1) Johnny is sitting on a bench and he is eating (biting in?? is it possible?) his hot dog. The hot dog is so gross because it is filled (stuffed?) with ketchup and mustard. 2) He is wearing a

    asked by Henry2
  208. Anthropology11

    how does society treat people with generalzed anxiety disorder?

    asked by Rebecca
  209. Geometry

    Find the perimeter of the regular hexagon. L = 4.55 yd Do I multiply by 6 because it has six sides? Is the answer 27.30?

    asked by Mindy
  210. Chemistry

    Describe how you could make approximately 5 g of a 3% (w/w) ferrous ammonium sulfate solution

    asked by Wanda
  211. Chemistry

    A certain classification test calls for 5 mL of 1.2 M NaOH. The only concentration of NaOH solution available is 3.0 M. Describe how you would make the quantity that you need of the 1.2 M NaOH solution.

    asked by Wanda
  212. Geometry

    Find the area of the square. L = 14 yd Can you explain this? Is the answer 14x14=196? Thank you kindly

    asked by Mindy
  213. Healthcare

    I have two question to ask. 1. Why is it important to use the research methodologies in the research process? Provide one exxample of using the research porcess in your workplace or personal life. 2. Explain the different types of research methodologies

    asked by pj
  214. Geometry

    Find the area of the parallelogram. L1= 19m, L2 = 25m Can you explains this? Do I multiply? Is the answer 475m?

    asked by Mindy
  215. math

    1.0 Four square root of seven open bracket two square root of three plus three square root of six minus square root of seven close bracket. 2.0 open bracket three square root of seven minus square root of two close bracket squared. 3.0 Seven divided by

    asked by lupupa
  216. algebra

    Perform the indicated oprrations and then simply. w-2/w -8 - w + 2/w + 8 + w - 104/w^2 -64

    asked by Jones
  217. statistics

    Suppose you agree to meet a friend(who is generally late) at a specified time. Assume that you arrive on time and let the random variable T be the length off time you must wait for your friend. If the density function for T is assume to be f(t)=1/t^2,

    asked by Brooks
  218. Science

    What are they asking in this question? Which is an alternative source of energy?

    asked by Bob
  219. HIS 204

    During a remarkable period of change from roughly 1865 to the early 20th century, the great cities that we know and love today expanded at an incredibly rapid pace and went through a fundamental transformation in composition and construction. Select one of

    asked by Bethe
  220. math

    for the curve y^3+(1/2)xy=1 find a formula for dy/dx in terms of x and y and find the equation of the tangent line to the curve at (-7,2)

    asked by suckatmath
  221. Math

    A television station has 28 new TV shows scheduled to air this week. What fraction of the television shows, in simplest form, are 30-minuet programs?

    asked by Anna
  222. physics

    if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?

    asked by kyla
  223. math

    Find all possible calues of the common ratio of the geometric sequence a,b,6, ... if a+b = 1.

    asked by NEEDHELP!!!!
  224. computers

    MS Word Quiz. "Browse Headings" in the Nav Pane organizes your document into a .... Answer a. heirarchy b. picture c. print preview d. keyword search

    asked by dave
  225. Statistics

    2. Obtain and interpret descriptive statistics (Mean, Median, Variance, and Std. Dev.). Include the STATA outputs in your results. (Use Stat command “tabstat crimerat police59, statistics(mean, p50, var, sd)” (3 pts) . tabstat crimerat

    asked by Mikey
  226. basic chemistry

    a substance that cannot be broken down into susbtances by ordinary chemical means is

    asked by lou
  227. Algebra 2

    What does this interest formula stand for: PRT=I

    asked by Anonymous
  228. 8th Grade Help

    My sister is gradating grade 8th this year and she wants to create her own 8th grade yearbook using a "marble notebook" she doesn't want to use a scrapbook she need cover ideas memorable quotes and funny ideas background ideas (when putting pictures she

    asked by Laruen
  229. statistics

    we have a normal distribution with mean 76 and standard deviation 6.4, find the percent between 69.6 & 76?

    asked by laura
  230. chemistry

    The heat of vaporization of water is 40 kJ mol-1 at 100oC. What percentage of the heat supplied to vaporize the water can be converted into work if the water is vaporized at 100 degrees C against a constant pressure of 1 atm?

    asked by nath
  231. scientist

    what are some background information for the stoichiometry lab involving hcl and naco3

    asked by scientist
  232. Math

    Atmospheric pressure changes as you rise above earth's surface. At an altitude of h kilometers, where 0

    asked by Dawn
  233. math

    what is the unit rate for $3 for 4lbs.

    asked by jack
  234. math

    dan,fran,stan have a total of 194 trading cards. Fran has 24 more cards than dan but 35 fewer than stan how many cards does each have

    asked by paris
  235. Statistics

    What z- value would you use if you wanted to construct a 73% confidence interval estimate for mean?

    asked by Yona
  236. chem

    how many ml of a.15M NaOH solution are required to neutralize 35.00 ml of 0.22M Hcl

    asked by dodo
  237. physics

    I don't know how to this problem please help. A 10 kg object sits 5 m away from a 50 kg object. Calculate the force of attraction between the two masses

    asked by kiren
  238. precal

    use the properties to find the exact value'log_7(343.7 ^15)

    asked by tiona
  239. Science

    once the shell has been removed, the next layer of the egg is exposed would represent what specific part of an animal cell.

    asked by Adam
  240. Human relations

    which criteria are you using or will you use to know if your career is successful

    asked by Teweety
  241. Physics 101

    The systemis in equilibrium and the pulleys are frictionless and massless. |_________________________| l l l ( . ) l / \ | / \ ( . ) 8kg | I 2kg ( . ) | / \ | I 6kg ______V____I____________________ _________________________________| Find the force T. The

    asked by physics
  242. physics

    if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?

    asked by kyla
  243. physics

    if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?

    asked by kyla
  244. Eng comp

    which of the following statements about arguments is true -they always involve a direct conflict -they are always about something that has not yet been decided -they always call for some kind of action on the part of the reader -they try to establish some

    asked by Stacy
  245. Math

    Add. (-6) + 11 Is 5 the answer?

    asked by Ruby
  246. calculus

    So from a previous post I asked, "f(x)=(1+x) what is f'(x) when x=0?" and someone replied, "the derivative of f(x)=x+1 is f'(x)=1 so your answer would just be 1" Now my question is why!? it doesn't matter what x is? f'x when x=238423904 will also be 1? For

    asked by Ben
  247. Math

    Subtract. -3 -16 Is -19 the answer?

    asked by Ruby
  248. Math

    4•(-5) Is 20 the correct answer?

    asked by Ruby
  249. Math

    Divide -60/10 Is -6 the answer?

    asked by Ruby
  250. Maths

    A rectangular field of length 260m and breadth 200m contains a circular track of diameter 140m. Taking pi=22/7, calculate the: length of fencing required to enclose the field and track, answer in km Please show working out! Thanks

    asked by 10M1
  251. chemistry(rusting)

    i know that metal placed in more acidic solution will produce rust faster.but why metal placed near the sea shore will easily have rust?the wind with moisture which contains salt solution,right?

    asked by Kong
  252. Materials Engineering

    Can someone please tell me what material is used for the an electric window switch (the part that the driver presses)?

    asked by Claire
  253. math

    Find the mystery number im a number between 300 and 400 im divisible by 3 and 4 . but not 9 my tens digit is a square number the sum of the hundreds digit and the tens digit is a prime number. find the mystery number

    asked by tyler
  254. human service

    What are some other technological tools that have been developed to help the individual manage their professional business contacts and/or stay connected. I googled this question and found no answer. Can you please help me find the website that I need. I

    asked by Patiance
  255. World History

    Who were the original English and Spanish settlers (Desiree them and their specific motivation for exploration.)

    asked by Mia
  256. english

    need a poem that is similar in nature to katy perry's firework. can't find anything anywhere. Can anyone help me?

    asked by lisa
  257. 6th grade ELA

    supporting ideas such as statistics and _______________ help explain the main idea.

    asked by Kate
  258. math

    A perfect minor wholetone is a frequency rtio of 10:9. A perfect major wholetone is a frequency ratio of 9:8. Are these noticeably different from an equal temper wholetone? (200 cents)

    asked by Help please
  259. math

    You invest money that pays 6.3% interest/year compounded quarterly. How long should you invest if want to double initial investment? I tried A=P(1+r/n)^nt, but it didn't work, using A=2P. the principle is not given. Please help

    asked by BJ - help please
  260. Algebra 3

    Absolute Value (x^2-1)

    asked by Joe
  261. Art

    does the word diversity have something to do with culture ??? like a reglious person (mexcian, japanese, jamican, british)

    asked by Laruen
  262. math

    how many triangles can you make by joining the diagonals of a pentagon?

    asked by nita
  263. algebra

    solve r^2+r-20=0

    asked by Anonymous
  264. math

    how many triangles can you make by joining the diagonals of a pentagon?

    asked by nita
  265. math

    how many triangles can you make by joining the diagonals of a pentagon?

    asked by nita
  266. math

    Hi i am Sabria and I need help with the following questions: Test each number for divisibility by 2,3,5,9,and 10 1.168 2.53 3.499 4.66,780 5.4326 6.75 7.1011 8.50,436

    asked by sabria
  267. Algebra

    Solve 2.3 = -y/2 How do I solve this?

    asked by Kayla
  268. algebra

    solve r^2-7r-30=0

    asked by Lynn
  269. English

    Could you please tell me if this sentence is grammatically correct? 1) Macbeth observes how much of a man she is compared with himself.

    asked by Henry2
  270. algebra

    Use rational exponents to write x^1/5* y^1/6 * z^1/3

    asked by Jim
  271. algebra

    solve (x+17)(x-6)(x+14)>0

    asked by Bill
  272. science

    I grew in a cave,but i,m not alive, I began as water and minerals, but now I am solid, I grow upwards, but I never see the sky

    asked by Anonymous
  273. algebra

    50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9% interest that compounds monthly for 7 years.

    asked by Anonymous
  274. Staitstics

    What statistical test would be appropriate for a sample size of 25

    asked by Tommy
  275. Algebra

    CEO Salaries In 2002, hourly wages for the top three CEOs (chief executive officers) of U.S. corporations were calculated based on their working 14 hours per day for 365 days. Together the three CEOs made $44,000 per hour. The top CEO earned $2,000 more

    asked by genie
  276. Introduction to Psychology

    As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group

    asked by Anonymous
  277. Algebra II

    A population growing at a rate of 1.6% per year from an initial population of 11000 will grow in t years to an amount How many years will it take the population to triple?

    asked by Arielle
  278. Physics ( Dammed Oscillations )

    A 3-kg mass attached to a spring with k = 142 N/m is oscillating in a vat of oil, which damps the oscillations. (a) If the damping constant of the oil is b = 14 kg/s, how long will it take the amplitude of the oscillations to decrease to 1% of its original

    asked by Ayman
  279. World History

    How were the rights of individuals regarded in the English and Spanish colonies?

    asked by Thad
  280. Physics ( Damped Oscillations )

    A 3-kg mass attached to a spring with k = 142 N/m is oscillating in a vat of oil, which damps the oscillations. (a) If the damping constant of the oil is b = 14 kg/s, how long will it take the amplitude of the oscillations to decrease to 1% of its original

    asked by Ayman
  281. History

    How did divergent towards land, its ownership and its uses, impact the development of English and Spanish societies?

    asked by Thad
  282. Physics ( Damped Oscillations )

    A vertical spring with a spring constant of 2.04 N/m has a 0.32-kg mass attached to it, and the mass moves in a medium with a damping constant of 0.025 kg/s. The mass is released from rest at a position 5.6 cm from the equilibrium position. How long will

    asked by Ayman
  283. abstract algebra

    Let R be a ring. The center of R is the set C= {x exists in R| ax=xa for all a in R}. Show that C is a subring of R.

    asked by Mary
  284. geometry

    what is the slope of the line determined by the equation 2x+y=5?

    asked by Megan
  285. physics

    I don't know how to this problem please help. A 10 kg object sits 5 m away from a 50 kg object. Calculate the force of attraction between the two masses

    asked by kristen
  286. sciene

    how do u research speeches on the internet {worldbiomes}.

    asked by sierra
  287. Physics

    If a man has an average useful power output of 31 W, what is the minimum time, in s, it would take him to lift fifty 12.3 kg boxes a height of 2.3 m. i'm thinking i should find the work done then find power with p = work/time

    asked by henry
  288. English

    I urgently need you to revise these sentences. In particular, I don't think sentence 2 is grammatically correct. Thank you. 1) In "Macbeth", as in many of his comedies and tragedies, Shakespeare offers a profound reflection on a theme which is both modern

    asked by Henry2
  289. math

    . A project management consultant estimated that if a particular project was completed, that t years after its date of completion, P thousand persons would be direct beneficiaries of the project, where P (t) = t3/3 - 5t2 +20t, 0

    asked by help
  290. SCI

    Please help me in understanding this. Differentiate between the First Law of Thermodynamics and the Second Law of Thermodynamics.

    asked by PENNY
  291. Physics

    A 10N block is attached to the wall by a rope on a frictionless surface. If the lower surface makes an angle of 30 degrees with the horizontal, calculate the (a) normal force (b) tension on the rope.

    asked by Lexi
  292. Science

    Can you give me a link to where I can find a paragraph of about 30 words on soil and it's properties?!?!?! Please help! i've been doing this for 5 hours and I need to go to sleep.

    asked by Chin Lo
  293. Biology

    4) Explain why organisms do not violate the second law of thermodynamics?

    asked by Cassie
  294. government

    11. America’s founding principles have roots in: (Points : 5) beliefs about the proper use of war. commercial practices. systems of absolute rule. religious beliefs.

    asked by Anonymous
  295. Chemistry

    Describe how you could make 5 mL of 2M potassium hydroxide solution if you have potassium hydroxide pellets available.

    asked by Wanda
  296. algebra

    s^2-4/(s+2) Simplyby removing factors of 1

    asked by Bob
  297. HCS514

    Explain how major laws and regulations influence organization accountability. Describe how this might be different in a long-term care facility as opposed to an acute care facility.

    asked by MUNECA
  298. algebra

    Find the varition constant and an equation where y varies directly as x=16 where x=8

    asked by Robert
  299. spanish

    What is the correct sentence to say: I am going to wake up early.

    asked by jerielle
  300. Social studies

    Before the first white person set foot in North America, it's people can be described most accurately as A) nomadic B) democratic C) multicultural D) homogenous I think it's either a or d but I'm not sure please help!!! By the way I searched nomadic it

    asked by Amber
  301. Criminal Justice

    During the 1960s, social structure theories strongly influenced the development of delinquency prevention programs. Why did many of the earliest programs fail? What is being done differently today in the development of prevention programs?

    asked by Heather
  302. math

    what is the half life if a decay by 75% in two weeks?

    asked by katelyn
  303. social studies

    what are three things that theodore roosevelt feared? what are three thing that theodore roosevelt would like to do?

    asked by taylor
  304. algebra

    Find integer bounds for the roots of the following equation: 3x^5-11x^4-2x^3=38x^2-21x-15

    asked by Jena
  305. Introduction to Psychology

    As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group

    asked by Anonymous
  306. algebra

    Factor completly: 64s^2 + 49 - 1125

    asked by Buzzy
  307. algebra1

    Evaluate each funtion for the given input values: for f(x)=4x-3,find f(x)when x=3 so is it f(x)=4(3)-3 f(x)=12-3 f(x)=9? is this right?

    asked by chika0217
  308. English

    I perfectly agree with you on sentence 2. I'm just wondering why the subject has been repeated twice. I added a few more sentences I'm not sure of. 1) The metaphor of the world as a stage was common in Renaissance culture, but in Shakespeare’s great

    asked by Henry2
  309. science

    the tracks of the astronauts who landed on the moon are still there in the dust and show no signs of being worn away.this is attruted to the lack of atmosphere on the moon. which of the following best accounts for the lack of atmosphere.

    asked by zach
  310. math algerba

    ½(y-2)+2 =3/8(3y-4) Is 4 a solution?

    asked by kelsey
  311. Social studies

    What is outsourcing ?

    asked by Amber
  312. trig

    To the nearest degree, determine the measure of

    asked by dina
  313. science

    the lack of atmosphere.

    asked by zach
  314. Introduction to Psychology

    Monique cannot seem to sit still, talks rapidly, and never seems to get tired at the end of the day. Her friends suspect that she is taking: a. cocaine. b. Rohypnol. c. LSD. d. speed. I think it is either c or d and I do know that it is not b.

    asked by Anonymous
  315. Math

    Find the mystery number. Three less than the quotient of the number and five is negative fifty-two.

    asked by Joe
  316. Science(egg in vinegar) PLease check my answer

    what biological model does the egg represent? stomach it shows what happens to protein iif you put it into an acid.

    asked by Adam
  317. science urgent!

    What are the organic and inorganic properties of soil, Describe.

    asked by Emilee
  318. Chemistry

    Calculate the pH of 100.0 mL of .0200 M pyruvic acid and .0600 M sodium pyruvate Calculate the pH of 100.0 mL of .0200 M pyruvic acid and 0.0600 M sodium pyruvate with 0.250 millimoles of H3O+ added.

    asked by Jessica
  319. pleez! science stuff

    What is the application be on my project which was "me and my class go out and check the soil for organic things and beans and natural stuff + to describe what it looks like what color,shape,texture, and size the things we found are" PLEEZ! help i still

    asked by Jenna
  320. history

    America’s founding principles have roots in: (Points : 5) beliefs about the proper use of war. commercial practices. systems of absolute

    asked by Anonymous