Questions Asked on
March 29, 2014

  1. Math

    A physics exam consists of 9 multiple-choice questions and 6 open-ended problems in which all work must be shown. If an examinee must answer 5 of the multiple-choice questions and 2 of the open-ended problems, in how many ways can the questions and

    asked by Anonymous
  2. Chemistry

    A 1533 kg car is traveling down the road at 90.6 km/h. While traveling at this rate of speed, what is the kinetic energy of this vehicle in kilojoules?

    asked by Harielle
  3. algebra

    The height of a ball dropped from a tall building is modeled by the equation d(t) = 16t2 where d equals the distance traveled at time t seconds and t equals the time in seconds. What does the average rate of change of d(t) from t = 2 to t = 5 represent?

    asked by Anonymous
  4. Chemistry Help Please!!!

    What is the greatest source of error for the hydrolysis of salts and pH of buffer solutions lab?How would you minimize this source of error?

    asked by Kim
  5. 3 science questions

    7. Which of the following is used to make biomass fuel? B. plants and animal waste C. coal

    asked by Check my answers please
  6. physics

    The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 4.20-N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the drawing, determine the

    asked by adeola akinwekomi
  7. chemistry

    What are strongest intermolecular force in hydrogen iodide ?

    asked by john
  8. math

    Suppose you borrow $1,000 of principal that must be repaid at the end of two years, along with interest of 5 percent a year. If the annual inflation rate turns out to be 10 percent, (a) What is the real rate of interest on the loan? For this I got -5%. (b)

    asked by jay
  9. HIM

    Case Discussion Dr. Pearson has recently been hired into the Central City Internal Medicine Group as its fifth physician. He has recently completed his residency and is eager to enter private practice. Dr. Pearson is introduced to Meredith and Dawn, two

    asked by abed
  10. physic

    A 69-cm-diameter wheel accelerates uniformly about its center from 150rpm to 320rpm in 4.4s . Determine angular acceleration?

    asked by Charles
  11. Chemistry Help Please!!!

    1) using kb for NH3 calculate ka for NH4+ ion. Compare this value with that calculated from your measured ph's? 2) how should the pH of a 0.1M solution of NaC2 at H3O2 compare with that of a 0.1 M solution of KC2H3O2? Explain briefly? THANK YOU!

    asked by Layla
  12. math

    If the consumption function is C = $200 billion + 0.6Y, (a) How much do consumers spend with incomes of $8.25 trillion? I got 5.2 trillion for this. (b) How much do they save? ??

    asked by jay
  13. south carolina state history

    Which statement explains why public education suffered during reconstruction? A) the state preferred private education to public educatioin. B) teachers were not properly trained to do their jobs effectively.**** THIS ONE? C) the general public cared more

    asked by Runtafus
  14. physic angular momentum and torque

    Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.

    asked by Jenna
  15. Statistics

    . A 2003 Harris Poll of 993 randomly selected American adults found that 69% believed in capital punishment (death penalty). A sample size of 1010 American adults in 2000 found that 64% believed in capital punishment. Write the hypotheses for a

    asked by Robert
  16. Chemistry

    In this experiment NaOH is standardized to find out the percent by mass of the acetic acid in a sample of vinegar. A student had not allowed the NaOH pellets to dissolve completely before standardizing it with KHP, but when the student refilled the buret

    asked by Sandy
  17. physic angular momentum and torque

    What is the angular momentum of a figure skater spinning at 2.7rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.6m , a radius of 14cm , and a mass of 50kg How much torque is required to slow her to a stop in

    asked by sammy
  18. Fiance

    What must be the price of a $10,000 bond with a 6.5% coupon rate, semi-annual coupons, and two years to maturity if it has a yield to maturity of 8% APR?

    asked by Victor
  19. Finance

    If $12,000 is invested in a certain business at the start of the year, the investor will receive $3,600 at the end of the next four years. What is the present value of this business opportunity if the interest rate is 7% per year?

    asked by Victor
  20. Physics

    In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency. If one string slips from its normal tension of 610 N to 542.00 N, what beat

    asked by Jen
  21. chemistry

    if .5 mole of baCl2 is mixed with .2 mole of Na3Po4.Then maximum number of mole of Ba3(PO4)2 is

    asked by anu
  22. Finance

    What is the coupon rate of a two-year, $10,000 bond with semiannual coupons and a price of $9,543.45, if it has yield to maturity of 6.8%?

    asked by Victor
  23. Trig

    If the period of a cosine function is 1/3 what is the frequency of the function?

    asked by Kiki
  24. math

    1. For n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x successes in the following exercises.Round your final answers to three decimal places. a.n = 7, p = ¼ , x = 4

    asked by carol
  25. Stats

    Assume that event A occurs with probability 0.4 and event B occurs with probability 0.5. Assume that A and B are disjoint events. The probability that either event occurs (A or B) is A. 0.0 B. 0.7 C. 0.9 D. 1.0.

    asked by Tracy
  26. Chemistry

    In this experiment NaOH is standardized to titrate it with vinegar so thtat the percent by mass of the acetic acid can be determined. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? How

    asked by Sandy
  27. algebra

    Jeremy had 36 community concert tickets to sell. He sold 2 and 3 and a third of the tickets did jeremy sell

    asked by Kayla
  28. chemistry

    what is the hybridization of each atom for hydrocyanic acid?

    asked by Mai
  29. Physics

    The ship in the figure below travels along a straight line parallel to the shore and a distance d = 580 m from it. The ship's radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 700 m apart. The

    asked by Jen
  30. Stats

    The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is

    asked by Tracy
  31. Chemistry

    How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? How is the term acid anhydride applied here? I know you had answered this already, but what if KHP is used to titrate the NaOH. In this

    asked by Sandy
  32. Stats

    Let the random variable X be a random number with the uniform density curve given below. P(0.6 < X < 0.9) is

    asked by Tracy
  33. algebra

    The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $310 for 140 mi and in June her cost was $450 for 700 mi. Assume that there is a linear relationship between the monthly cost C of driving

    asked by tim
  34. physics

    If the specific gravity of mercury is 13.6 and the atmospheric pressure is 70cm of mercury, what is the total pressure of gas supply in cm of water

    asked by micheal
  35. survey math 140

    a textbook search is considering 19 books for possible adoption. the committee has decided to select 5 of the 19 for furture consideration in how many way can id do so

    asked by Anonymous
  36. algebra 1

    A company manfactures an alarm clock. Three weeks ago the company had 250 on hand. Two weeks from now it will have 500. Assume the company will continue to make the clocks at the same rate.

    asked by Anonymous
  37. maths natural log

    In the beginning, only some white aigrettes live in a swamp. On a certain day, a group of black aigrettes migrate to the swamp. The population of the white aigrettes (W) and the black aigrettes (b)after t months are given by W= 1100e^(-0.08t) and b= 800-

    asked by jasontt
  38. Physic Angular momentum and torque

    What is the angular momentum of a 1.0kg uniform cylindrical grinding wheel of radius 19cm when rotating at 1700rpm ?How much torque is required to stop it in 4.6s ?

    asked by David
  39. probability

    A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles?

    asked by Matt
  40. Finance

    You borrow $150,000 to purchase a new house. The bank offers you a special 20 year loan with a 7% interest rate and you will make annual payments. How large will each payment be? If you want to sell your house after 7 years, how much will you owe and need

    asked by Donald
  41. Chemistry - Solubility

    1.a) What did you observe upon the addition of NH3 (aq) to the magnesium chloride solution? Explain using relevant chemical reactions. I observed a colorless liquid. (Not sure how to explain) b) What happens when NH4Cl was added? Explain observation with

    asked by HelpThankYou
  42. us history

    Explain how wwII promoted an awareness of the links between racism in the US and coloniasm around the world. (in a long essay please)

    asked by Catherine
  43. To Steve

    Sorry here is completed question A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? 1- Randomly choose a marble don't replace

    asked by Matt
  44. Law

    can someone explain to me what the term Libel by Implication means? does it mean like libel my suggestion/ insinuation?

    asked by Blaze
  45. Trig

    In ΔABC, a = 19, c = 10, and m∠A = 111. Which statement can be used to find the value of C?

    asked by Kiki
  46. health

    Below are descriptions about the programs that are designed to help prevent suicide. Which statement is true? A. CBT because it teaches the skills needed to deal better with upsetting situations. B. DBT, sometimes called collaborative care management, uses

    asked by mix_lks
  47. Physic

    Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.

    asked by Charles
  48. Statistics

    Which of these statements is always true for a researcher who is using standard statistical methods in a test of significance? A. A researcher who rejects a true null hypothesis has committed a Type II error. B. A researcher who rejects the null hypothesis

    asked by John
  49. Trig

    What is the total number of solutions for the equation 3 tan^2 A + tan A – 2 = 0 in the interval. 0 ≤ A ≤ π?

    asked by Kiki
  50. math

    A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? Randomly choose a marble don't replace it then randomly choose another

    asked by Matt
  51. Chemistry

    What did you observe after the addition of dilute HCl to the saturated lead chloride solution? Explain observations using relevant chemical reaction. I observed that a white precipitate was formed. Not sure how to explain why it formed

    asked by PleaseHelp
  52. Finance

    Mark has won a contest in which he will receive $10,000 at the end of each of the next 10 years and then $20,000 a year for the next 30 years after that. With an 8% discount rate, what is the present value of Mark's prize?

    asked by Donald
  53. english

    Think about the figurative language in this stanza. What is the speaker saying? (1 point) It is hard to find your way at night because it is dark. It is the middle of the night and she is hungry. People find life in being with others. People have to help

    asked by james
  54. Chemistry

    I am thrown off by this question because they don't give a molecule to work with. Also i don't know how i would work the acid... help! A 195 mL solution of a dilute acid is added to 102 mL of a base solution in a coffee-cup calorimeter. The temperature of

    asked by Ali
  55. chemistry

    how many mL of 1M HCL is used to make: 100mL of 0.1M hcl 250Ml OF 0.5M hcl 10Ml OF 0.01m hcl

    asked by Tammy
  56. Statistics

    Sorry to ask another question but I keep struggling with this class. If all else remains the same, which of these will make a confidence interval for a proportion narrower? I. Increase the confidence level. II. Increase the sample size. III. Increase the

    asked by John
  57. physics

    Eva is in a closed, dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light heats her hand. The light bounces off the pages of a book and into her eyes. If this room is a closed system, what happens to

    asked by Help
  58. Chemistry - Solubility Product

    What did you observe after the addition of dilute HCl to the saturated lead chloride solution? Explain observations using relevant chemical reaction. I observed that a white precipitate was formed. Not sure how to explain why it formed

    asked by PleaseHelp
  59. Finance

    Jared has decided that he wants to build enough retirement wealth that, if he invests at 8% per year (compounded monthly), will provide him with $3,500 of monthly income for 30 years. To date, he has saved nothing, but he still has 25 years until he

    asked by Donald
  60. math

    you have a 2.5 od pipe can you get the same flow from two 1.and a quarter od pipe

    asked by billy
  61. math

    if 1/2 years ago adam was 12, and 1/2x years from now he will be 2x years old, how old will he be 3x years from now

    asked by Leona
  62. Health

    What causes depression? A. Genetic issues B. Biochemical issues C. There is no known cause D. Environmental issues

    asked by mix_lks
  63. helth

    Which symptoms are more common in depressed children and adolescents than in adults with depression? A. Fears of separation B. Reluctance to meet people C. General aches and pains D. All of the above b?

    asked by mix_lks
  64. math

    If true, prove. If false, provide just a counterexample: a. For every function f from nonnegative integers into nonnegative reals, o( f ) = O( f ) −Θ( f ) . (Here, “-“ denotes the set difference: A – B consists of elements in A that are not in

    asked by huing
  65. chemistry

    what is the lewis structure for N-bromosuccinimide?

    asked by Mai
  66. algebra

    Solve the following rational inequality. Write the solution in interval notation. Show the number line and breaking points or graph of the polynomial with the part of the graph that is the solution (x-4)(x+2)/(x-3)(x+5) ¡Ü 0

    asked by james
  67. Social Studies

    Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be? Pls i really need help D:

    asked by George
  68. Physics

    How much is the acceleration of a baseball thrown by a pitcher in a major league baseball game, if the ball goes from 0 to 90 mph in a one-half-second time period?

    asked by Reggie
  69. math

    Solve this equation for x Log3^2x+5 =1

    asked by Lindsay
  70. research help/ law

    How is Japan's libel law different from the U.S. Can anyone provide me with some helpful Websites, it can't be wikipedia or the encyclopedia. I'm having difficulty finding useful sites.

    asked by Blaze
  71. Help!! Physics

    What capacitance in needed in series with an 785 µH inductor to form a circuit that radiates a wavelength of 199 m?

    asked by S
  72. Physic Moment of inertia

    Determine the moment of inertia of a 11.1kg sphere of radius 0.794m when the axis of rotation is through its center.

    asked by David
  73. teaching

    How would you incorporate logic and experimentation into your curriculum and still emphasize Native American thinking into your curriculum? For example a science teacher could have students monitor and document the phases of the moon by dates and write

    asked by Dave
  74. Calculus

    When dy/dx=(x-6)^½ what does y equal?

    asked by Eric