Questions Asked on
August 14, 2010

  1. phys102

    a copper wire has a diameter of 1.02mm,the wire carries a constant current of 1.67A,the density of the free electrons is 8.5X10^28 e/m^3.calculate the current density and drift velocity

    asked by kabelo
  2. statistics

    If a data set has a mean of 10.0 seconds and a standard deviation of 2.0 seconds, what is the Z score corresponding to the time of 4.0 seconds?

    asked by Desiree
  3. chemistry

    6.00g of gold was heated from 20.0 degrees celcius to 22.0 degrees celcius. how much heat was applied to the gold?

    asked by sharnice
  4. economics

    If the elasticity of demand for cocaine is −.2 and the Drug Enforcement Administration succeeds in reducing supply substantially, causing the street price of the drug to rise by 50%, buyers will spend less on cocaine.

    asked by Monica
  5. microeconomics

    For each of the following scenarios, decide whether you agree or disagree and explain your answer. a. If the elasticity of demand for cocaine is −.2 and the Drug Enforcement Administration succeeds in reducing supply substantially, causing the street

    asked by mimi
  6. math

    On a roulette wheel are 36 slots numbered 1 through 36 and 2 slots numbered 0 and 00. You can bet on a single number. If the ball lands on your number, you receive 35 chips plus the chip you played. a. What is the probability that the ball will land on 17?

    asked by kirk
  7. chemistry

    Home many drops of 0.1M HCl is needed to neutralize 10mL of 1M NaOH?

    asked by georgia
  8. economics

    Every year Christmas tree vendors bring tens of thousands of trees from the forests of New England to New York City and Boston. During the last two years, the market has been very competitive; as a result, price has fallen by 10 percent. If the price

    asked by mm
  9. college physics

    you find that it takes a horizontal force of 160 newtons to slide a box along the surface of a level floor at constant speed . the coefficient of static friction is 0.52, and the coefficient of kinetic friction is 0.47. if you place the box on a dolly of

    asked by oslec
  10. economics

    Week 3 Homework Please answer the following questions: 1. The following information describes the value Lori Landlord places on having her five apartment houses repainted. She values the repainting of each apartment house at a different amount depending on

    asked by austin
  11. trigonometry

    From lookout tower 80ft. high, a man observes from a position 6.5 ft. below the top of the tower that the angle of elevation of the top of the certain tree is 12deg40mins and the angle of depression of its base is 70deg20mins. If the base oof the tower and

    asked by Winsel
  12. Biology (muscle response)

    Suppose you are asleep and the doorbell rings. You stumble to your feet and move toward the door, open it and speek with your visitor. Think of the many changes occurring in your body as you awaken and respond. How does the three types of muscle tissue

    asked by Maddy
  13. college

    What are 4 archetypes in the novel Walk Two Moons?

    asked by Ms Cherie
  14. math

    The following are the amounts (to the nearest dollar) paid by 25 students for textbooks during the fall term: a. Draw an ordered stem and leaf plot to illustrate the data. b. Construct a grouped frequency table for the data, starting the first class at

    asked by kirk
  15. Maths

    Could someone help me with this question please? Which angle between 0° and 360° has the same cosine as the angle 55°? Thanks in advance

    asked by Tandy
  16. maths trig

    if p and q are the solutions of the equation atanx+bsecx,show that tan(A+B)=2ac/(a^2-c^2)

    asked by arti
  17. medical

    which one of the following statements is an example of hearsay? a)i saw the doctor administer the injection.b)i checked the patients blood pressure three times.c)the report said the patient died on january 15.d)the report was on my desk when i arrived for

    asked by kristie
  18. algebra

    The area of a rectangle is 21 square meters. Find the length and width of the rectangle if its length is 4 meters greater than its widith. using Area of a rectangle = (width)(Length)

    asked by Peg R
  19. pre-calculus

    Find the designated term of the binomial expansion. 5th term of (4a+2b)^3 This is done without using Pascal's Triangle.

    asked by Maria
  20. chemistry

    What mass of solute is needed to prepare 140 mL of 0.560 M KCl? how do i work this out?

    asked by Josh
  21. Business Communications

    Which of the following would be classified as an informative or possitive message? A. A request for information B. An announcement of a policy that reduces benefits C. A memo for the file recording actions and rationales D. A letter to an employer

    asked by Rain Misoa
  22. trigonometry

    A surveyor made two sections of the railroad bridge, both at 210 meters in length. Suppose that the maximum of elevation of each section is 75deg. When the bridge is closed, the water level is normally 13 meters below the bridge. a. When the bridge is

    asked by Winsel
  23. Math

    Hi, what is the gradient of a line that has an angle of inclination of 75°? Any help appreciated

    asked by Mai
  24. Math

    Simplify: f(x)=sqrt (16-x^4)/ sinx This is to evaluate a limit, but I don't know if I can simplify the above equation. Because I tried to get rid of the radical in the numerator but I ended up with a radical in the denominator. >< Help

    asked by Neee
  25. economics

    I need to review a n example of an essay on a 700-1,050 word essay on one good that you have had experience purchasing and the good I chose is online college explaining factors that could cause possible chandes in supply and demand. Determine at least 2

    asked by krissy
  26. AED/200

    This isn't due until sunday(August 15, 2010). Can you please help me with this paper. Ideas would be great!! Write a 700-1,050 word paper describing your experience with the new technology tool. Include the following in your paper: 1. A description of the

    asked by Jasmine
  27. geometry

    The length of a rectagle is 9 centimeters more than half the width. Find the legth if the perimeter is 60 centimeters.

    asked by josh
  28. physics

    If you are in a smooth riding bus that is going 50 km/hr and you flip a coin vertically, what is the horizontal velocity of the coin in midair relative to the ground?

    asked by Anonymous
  29. English

    What are some good intepretive discussion questions for the book This Boy's Life by Tobias Wolff

    asked by Ethan
  30. legal antropology

    I am a student Master in Public administration, but one part legal antropology is included. it is difficult for me to understant can somebody help me with some exam question regarding the semi autonomous social fiel in relation to the state, property or

    asked by sie
  31. Math

    The following equation has a positive and a negative solution. z-1/z+1 = 2/z+4 I need to find the positive solution, any ideas please?

    asked by Del
  32. Maths

    Please help!!! The mass of a particular substance is known to grow exponentially at a rate of 1.5% per day. Its initial mass was 230 grams and, after t days, it weighed 325 grams. The equation modelling this growth is 230×1.015 t  =  325. Use

    asked by Sue
  33. chemistry

    how many joules of heat are required to heat a 75 gram silver spoon from 20celcius to 30 celcius

    asked by Anonymous
  34. Microeconomics

    1.Trade liberalization leads to a "race to the bottom" in environmental standards

    asked by Brown
  35. math

    If the lottery with odds as in exercise 15 has a prize of $13,567,290, is buying a ticket for $1 a fair deal? Explain your answer.

    asked by kirk
  36. Statistics

    . Using Excel, find the t-score that corresponds to the following Confidence Levels and Sample Sizes: a. 95% with n = 25 b. 96% with n = 15 c. 97% with n = 21 d. 91% with n = 10

    asked by Shanta
  37. algebra

    Need mathamatical expression. The simple interest rate, given that the principal is 3x, the rate is 6%, and the time is 1 year. im so lost with this math question.

    asked by Peggy
  38. math

    (e^(e^x)) = 2 find x.

    asked by <3
  39. US History II

    In the conflict of Harry S. Truman v. Douglas MacArthur did Truman fear war with China or USSR if he used atomic bombs?

    asked by Amy~
  40. US History II

    What was the Gold Standard in William Jennings Bryan v. William McKinley? - that gold was only standard to redeem paper money. What does this mean? Thank You.

    asked by Amy~
  41. math

    Sam has a savings account that increased in value over a twelve month period from $8765.00 to $9006.04. He made no deposits or withdrawals in that time. What percent interest did he receive for the 12 month period?

    asked by Steph
  42. Math 116

    Solve by the substitution method. 3x+8y=57 x=67-8y

    asked by Rick
  43. chemistry

    it is 0.1M of acetic buffer equal to sum up of 0.05M of acetic acid and 0.05M of sodium acetic ?

    asked by leon
  44. Math

    How would I calculate the area of a sector of a circle with radius 2 m that subtends an angle pi/3

    asked by Dave
  45. economics

    If the demand for a good has unitary elasticity, or elasticity is −1, it is always true that an increase in its price will lead to more revenues for sellers taken as a whole.

    asked by mimi
  46. mgt 415

    What is the relationship between controversy, decision-making, and creativity?

    asked by meshelle
  47. marketing

    List three questions a marketing manager might want to ask. Then, provide answers, incorporating marketing math concepts.

    asked by Tasha
  48. COLLEGE MATH

    What percentage of 40 IS 120? I used the formula: 40 =x*120 -40 -40 x= 80% to me this seems way to high as 40 goes into 120 three times making it 33%. Am I using the wrong formula? According to the text book, it seems to be the right answer, but does not

    asked by Rick
  49. math

    a rectangle is fixed at 17cm. what width will make the perimeter greater than 80cm

    asked by cindy
  50. math

    Use the formula from Exercise 107( W=91.4-(10.5+6.7Sqrt(x)v-0.45v)(457-5t)/110 ) to determine who will feel colder: a person in Minneapolis at 10°F with a 15-mph wind or a person in Chicago at 20°F with a 25-mph wind.

    asked by bobbi
  51. math

    can anyone help me with the problem i posted a while ago???????

    asked by bobbi help???????
  52. criminal Justice

    Why are K-9 units important in fighting crime? Explain.

    asked by mee
  53. Business

    Explain why sears and walmart cant create a trendy counercoulture image

    asked by Linda M.
  54. algerdra

    shoes were on sale for 52.83 and that is at 25% off what is the regular price before the sale

    asked by cindy
  55. Psychology

    How have you used the scientific process (unsystematic observation, building theories, and evaluating propositions) in your life to better understand your personality?

    asked by Cynthia Williamson
  56. medical

    most medical malpractice cases are related to. a.failure to inform b.errors in treatment c.abandonment d.negligence

    asked by my
  57. Psychology Observations

    Observations • Write a 200- to 300-word response to the following: How have you used the scientific process (unsystematic observation, building theories, and evaluating propositions) in your life to better understand your personality? Provide an example

    asked by Cynthia Williamson
  58. Algebra I

    1. Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation a. What does the number 3.03 represent? b. Find C(2). c. Find C(9). d. For the average

    asked by stephaine
  59. US History II

    What was the dispute over the form of National Currency between William Jennings Bryan and William McKinley? -was it about the Gold standard and coinage of silver?

    asked by Amy~
  60. algebra

    solve for variable h s equals 2 pie rh +2 pie r squared

    asked by mary
  61. MicroEconomics

    Have shown my answers to these 14 problems,that I thought were correct. Do you mind letting me know what you think. Thank you so much. Anything will help!! I have placed an ****. By the ones I think are right!! 7. If equilibrium exists: (Points: 3) all

    asked by Danielle
  62. physics

    A pendulum has a mass of 3-kg, a length of 2.2 meter, and swings through a (half) arc of 30 degrees. To the tenth of a Joule, what is its maximum Kinetic Energy? I just need a very simple, straightforward method of solving this problem. Unfortunately my

    asked by Skyler
  63. college physics

    in which direction will we move loop(produced in magnetic field) to force current move in reverse direction?

    asked by Assar
  64. English

    1. He has three hours soccer practice every day. 2. He has three hours' soccer practice every day. 3. He has three-hour soccer practice every day. (Which one is grammatical?)

    asked by rfvv
  65. math

    how do you find the equation of a line knowing (-5,-5) and (-2.-3) so the slope will be 2/3...

    asked by jin
  66. math157

    How many three-symbol codes (letter-number-number) can be made from the letters S, P, Y and two digits from the set {0, 1, 2, …,9} without repetition? I think I am suppose to match each letter with a number until I exhaust all possibilities but I am not

    asked by Tami
  67. Math

    lim (as x approaches infinity) (x^2-1)/(x^2+1) How would you solve that by using algebra? I can simplify the above because it is difference of squares. But then what about the bottom

    asked by Jaimie
  68. college math.

    write an algebraic expression for the given information. The area of a rectangle whith sides "b" yards and b-6yards. Area of a rectangle is: A=LW When I work the formula I put this: A= LW A=B*(B-6) This seems to be the right answer, just want to make sure.

    asked by Rick
  69. Algebra

    solve the equation q+4 /5 + q -2 /2 =6/5

    asked by sarah
  70. algebra 2

    I'm stuck on this one problem. The directions say: Solve the following leaving the sq. rt. in it's simplest form: sq.rt of 33+ sq.rt of 96 - sq.rt of 3 = I think it can't be simplifed---am I correct? (the directions did say that some of the problems can't

    asked by dan
  71. algebra

    on three consecutive passes a football team gains 7yards, loses 15 yards and gains 32 yards what number represents the total net yardage

    asked by Anonymous
  72. m

    If events A and B are from the same sample space, and if and , can events A and B be mutually exclusive? Explain.

    asked by kirk