1. Physics

    A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

    asked by Sia on March 25, 2015
  2. Physics

    A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

    asked by Jordan on October 15, 2010
  3. Physics

    A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

    asked by Jacob on March 23, 2011
  4. physics

    A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

    asked by John on October 23, 2012
  5. physics

    there is a massless rope that is pulled over a frictionless pulley that is suspended high above the ground one end of the rope is tied to a heavy block with a mass of 483 kg the free end is climbed by a person with a mass of 102 kg who starts from rest. If

    asked by Joe on October 22, 2011
  6. physics

    A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

    asked by Meagan on November 4, 2011
  7. finance

    Linda Scales is now employed as the managing editor of a well-known business journal. Although she thoroughly enjoys her job and the people she works with, what she would really like to do is open a bookstore of her own. She would like to open her store in

    asked by james on March 19, 2014
  8. physics

    A monkey of mass m climbs a rope slung over a light frictionless pulley.The opposite end of the rope is tied to a block of Mass M lying on a smooth horizontal plane.Find the acceleration of the block and tension in the rope in the following cases 1)the

    asked by raven on June 15, 2013
  9. statistics

    The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life expectancy is between 64 and

    asked by mzb on January 22, 2013
  10. Algebra

    Show how you substitute the values into the formula, then use your calculator. *Use A = P(1+r/n)nt to find the amount of money in an account after t years, compounded n times per year. *Use I = Prt to find the amount of simple interest earned after t years

    asked by Sylvie on February 3, 2013
  11. finance

    New York Times Co. (NYT) recently earned a profit of $1.31 per share and has a P/E ratio of 19.25. The dividend has been growing at a 6.50 percent rate over the past six years. If this growth rate continues, what would be the stock price in four years if

    asked by deda on November 27, 2016
  12. Business Math

    If Wilma borrows $5,000 from her brother (at 5% interest per year) and the loan matures in 10 years, how much will she have to pay annually to pay the loan off in 10 years? How much will she have to pay annually to pay the loan off in four years?

    asked by Jordan on February 17, 2013
  13. History

    Which conclusion is best supported by New Mexico's overall population trend since World War II? A)New Mexico cannot manage its water scarcity problems. B)New Mexico has constructed few new houses or businesses. C)New Mexico offers many employment

    asked by Appreciated Help on October 7, 2015
  14. Social Studies

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

    asked by Jon on February 14, 2011
  15. physical

    The leading cause of death between ages 25 and 44 is A. heart disease. B. malignant neoplasms (cancer). C. unintentional injury. D. chronic low-respiratory disease.

    asked by patience on August 16, 2014
  16. math

    Could you please give me an example of gathering a set of data and choosing a small sample, between 10 and 20 pieces of data, and a simple value to measure, such as the ages of visitors in a park?

    asked by AD on March 25, 2015
  17. Physics

    A 0.0160-kg bullet traveling horizontally at 396 m/s strikes a 3.95-kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.06 m, how far from the table does the block hit the floor? -- First I used

    asked by Sarah on February 9, 2010
  18. college statistic

    A sample of 51 night-school students' ages is obtained in order to estimate the mean age of night-school students. x = 26 years. The population variance is 19. (a) Give a point estimate for μ. (Give your answer correct to one decimal place.) (b) Find the

    asked by samantha on July 23, 2012
  19. Finite math

    The manager of a money market fund has invested $4.2 million in certificates of deposit that pay interest at the rate of 5.4%/year compounded quarterly over a period of 5 years. How much will the investment be worth at the end of 5 years?

    asked by Brian on July 28, 2013
  20. Language

    Choose the meaning the best matches the word in a italics. The first choice of vacation days should go to employees with "Seniority". A. The highest age B. An inherited status C. The most years of service•• D the most years of education Correct me if

    asked by Tayler on January 20, 2016
  21. Calculus Please help!

    If 7000 dollars is invested in a bank account at an interest rate of 7 per cent per year. A) Find the amount in the bank after 6 years if interest is compounded annually? B) Find the amount in the bank after 6 years if interest is compounded quaterly? C)

    asked by ALI on February 22, 2014
  22. Physics

    A small disk of radius R1 is mounted coaxially with a larger disk of radius R2. The disks are securely fastened to each other and the combination is free to rotate on a fixed axle that is perpendicular to a horizontal frictionless table top. The rotational

    asked by John on December 2, 2011
  23. Physics

    Three blocks on a frictionless horizontal surface are in contact with each other A force F is applied to block 1 (m1) Draw a free body diagram for each block ok for the diagram is the force F applied horizontal to mass one does this force act on m2 all the

    asked by Physics on July 12, 2009
  24. math

    User: Ariana Bouillon In Course: M/J Mathematics 2 V9 ( 2820) Instructor: Mrs. Susan Lafferty 08.03 Experimental Probability Warning: There is a checkbox at the bottom of the exam form that you MUST check prior to submitting this exam. Failure to do so may

    asked by luis on August 2, 2013
  25. gov

    two-thirds majority of both houses. is that 2/3 of house + 2/3 of senate or 2/3 of house + senate It means 2/3 of both the house, and the senate. bob, i'm still a little confused. is it my first answer or the second? It is 2/3 of each part of Congress. It

    asked by angelle on April 6, 2007
  26. AP PHYSICS HELP

    One piston of a hydraulic lift holds 1.40*10^3 kg. The other holds an ice block (density= 917 kg/m^3) that is 0.076 m thick. Find the first piston's area. (Cross sectional area of the ice block = cross sectional area of the piston).

    asked by JOHN on December 10, 2012
  27. math

    In 1993, the life expectancy of males in a certain country was 61.3 years. In 1999, it was 64.7 years. Let E represent the life expectancy in year t and let t represent the number of years since 1993. The linear function E(t) that fits the data is? answer:

    asked by deedra on January 7, 2009
  28. Algebra

    The growth of stray cat population, n(t) in a small town can be modeled as n(t) = no e 0.15 t where t is time in years. Given that in year 1995, the town had 20 stray cats. a) Find the projected population after 5 years b) Find the number of years required

    asked by Janell on March 30, 2018
  29. College Algebra

    The growth of stray cat population, n(t) in a small town can be modeled as n(t) = no e 0.15 t where t is time in years. Given that in year 1995, the town had 20 stray cats. a) Find the projected population after 10 years b) Find the number of years

    asked by Please Help on April 3, 2018
  30. exponential function

    An investment pays 8% interest, compounded annually. a) write an equation that expresses the amount, A, of the investment as a function of time, t, in years. b) determine how long it will take for this investment to double in value and then to triple in

    asked by Jus on May 17, 2009
  31. Physics (please check)

    A 6.0kg block is released from rest 80m above the ground. When it has fallen 60m its kinetic energy is: I got 1200J as my answer mgh=(6.0*9.81* 60m)=3531.6 PE + KE= (ME + KE) 3531.6 + KE= (6.0*9.81*80m) KE= 1177.2 is that right A 6.0 Kg block is thrown up

    asked by susane on November 6, 2006
  32. Physics

    1) a car moving at 50km/h crashes Into the barrier and stops in 0.25 m a) if a 10kg child were to be stopped in the same time , what is the average force must be exerted ? c)approximately what is the mass of an object whose weight equals to the force in

    asked by Malak on April 13, 2013
  33. Calc. Help ASAP please

    the tuition at a college increases exponentially. the current tuition (let it be t=0) is 36,000 and in 2 years it will be 39,690. a) find a formula to predict the cost of tuition in t years. Is this right? And I'm stuck at the end. 39,690= 36,000e^(kt)

    asked by Joe on March 22, 2011
  34. statistics

    I don't know how to begin this question and it is due tonight. I'm not looking for someone to give me the answer. I just need help with the formula that I use and how do I go about answering this? Is the formula: P = P(total subject) / P(OJ drinker over

    asked by please help me! on March 16, 2010
  35. Geography

    If you just land in Australia no sign of civilization wat would you do to make a axe or something sharp to cut wood to make houses and such? This site tells how early people made sharp objects. http://weber.ucsd.edu/~dkjordan/arch/tools.html

    asked by R on February 14, 2007
  36. Physics

    Hi, here's a problem that I have difficulty with to solve. Block M2, w/c has a 20 kg mass, is on a frictionless table and it is firmly attached to one end of a spring with k = 2.5 N/m. The other end of the spring is anchored to the wall. Another block, M1

    asked by Chika on November 3, 2011
  37. Maths

    A man is 42 years old and his son is 12 years old. In how many years will the age of the son be half the age of the man at that time? Explain!

    asked by Abhishek on March 10, 2014
  38. physics

    A block is at rest on the incline shown in the figure. The coefficients of static and ki- netic friction are μs = 0.45 and μk = 0.38, respectively. The acceleration of gravity is 9.8 m/s2 . What is the frictional force acting on the 25 kg mass? Answer in

    asked by Anonymous on October 1, 2013
  39. nova

    7) You throw a 12-N stone vertically into the air from ground level. You observe that when it is 15.0 m above the ground, it is traveling at 25.0 m/s upward. Use the work –energy theorem to find (a) the stone’s speed just as it left the ground and (b)

    asked by papy on September 20, 2014
  40. Religious Studies and Ethics

    I am trying to write a little paragragh on RS, the subject and I need to write about the many siginificant discoveries that have been really helpfyul in the past 100 years or in recent years. I just need some ideas.

    asked by Hannah on February 18, 2011
  41. SIMPLE INTEREST

    A person borrows ₹5000 for 2 years at 4% p.a. simple interest. He lends to it to another person at 25/4%p.a. for 2 years. Find his gain in the transaction per year.

    asked by Karan on February 8, 2016
  42. M ath

    Sally has a sum of $26000 that she invests at 9% compounded monthly. What equal monthly payments can she receive over a period of a) 9 years? b) 7 years?

    asked by Justin on April 3, 2015
  43. math

    Suppose a 60,000 martgage is to be amortized at 7.5% interest. Find the total amount of interest that would be paid for each term a) 10 years b) 30 years.

    asked by Andrzej on December 5, 2012
  44. kaushik

    a sum of money put at11% per annum amount to 4491 in2 years 3 months what will it amount to in 3 years at the same rate

    asked by sanskar on July 31, 2016
  45. Math

    Connie made deposits of $2000 at the beginning of each year for four years. The rate she earned is 5% annually. What is the value of Connie's account in four years?

    asked by Linda on March 20, 2015
  46. math

    If 50100 dollars is deposited in an account for 14 years at 5.35 percent compounded continuously , find the average value of the account during the 14 years period.

    asked by Irina on May 10, 2015
  47. math

    If C dollars are deposited in an account paying r percent annual interest, approximate the amount in the account after X years if c=$250, r=2.4% and x=23 years?

    asked by angel on April 21, 2012
  48. Chemistry

    If the half life of Pu-239 is 2.4 x 10^4 years, how many years are required for a 20-gram sample of plutonium-239 to be reduced to a mass of 5 grams?

    asked by Please help on November 3, 2016
  49. Math 209

    If C dollars are deposited in an account paying r percent annual interest, approximate the amount in the account after x years if C=$150, r= 1.9% and x=25 years

    asked by Wanda on August 15, 2011
  50. math 142

    1,000 are deposited into an account quarterly  for eight years at an interest rate of 7.87.8​% compounded quarterly. How much is in the account at the end of the 88 ​years? 

    asked by rudy on November 1, 2016
  51. Biology

    The half -life of carbon-14 is 5,730 years.how much of an initial amount of this substance would remain after 17,190 years(3 Half-lifes

    asked by Eileen on November 23, 2010
  52. finance

    You deposit 172 dollars in an account every year for 9 years that earns 9 percent annual interest. How much money is in your account 9 years from now?

    asked by Anonymous on February 26, 2010
  53. math

    The decay of uranium is modelled by D = D_0 * 2^(-kt). If it takes 6 years for the mass of uranium to halve, find the percentage remaining after: a. 2 years

    asked by fun times on November 24, 2017
  54. Chemistry

    Calculate the time in which the activity of an element is reduced to 90% of its original value. The half-life period of the element is 1.4*10^10 years . Answer :- 2.13*10^9 years

    asked by Harsh on November 20, 2014
  55. math

    You think that in 15 years it will cost $212,000 to provide your child with a 4 year college education. Will you have enough if you take $70,000 today and invest it for the next 15 years at 5%?

    asked by malikah on October 25, 2013
  56. finance (math)

    You think that in 15 years it will cost $214,000 to provide your child with a 4-year college education. Will you have enough if you take $75,000 today and invest it for the next 15 years at 5%?

    asked by zeenat on July 22, 2013
  57. math

    Suppose a 60,000 martgage is to be amortized at 7.5% interest. Find the total amount of interest that would be paid for each term a) 10 years b) 30 years

    asked by Andrzej on December 5, 2012
  58. pre calc

    A 50 gram sample of radioactive strontium will decay to 32 grams in 18 years. a. Find an equation that will model how much of our sample M will remain after t years.

    asked by andi on April 27, 2016
  59. math

    A population is increasing according to the exponential function defined by y = 2e0.02x, where y is in millions and x is the number of years. How large will the population be in 3 years?

    asked by Brad on August 1, 2012
  60. math

    hair grows about 1/2 inch each month after you shave your head how many years will it buntil your hair is 1 foot in length? would the answer be 2 years? yes

    asked by ciera on January 24, 2007
  61. Math

    Which shape can NOT have perpendicular lines? A.triangle B.pentagon C.trapezoid D.circle D Lexie is 12 years old and is 4 years older than Felix.Felix is 5 years younger than Ivan.Ivan is 2 years older than Chung.Which lists the students in order from

    asked by NrGliight on May 8, 2012
  62. math

    Larry and Shamir want to build identical houses. They bought a rectangular piece of land and divided it into two identical squares.Each square piece of land has a area of 2500 meter squared. What is the perimeter of the original rectangle?

    asked by Eugene on April 9, 2013
  63. Chemistry

    Why neon gas is used in botanical gardens and green houses? Why KrF6 doesn't exist? Why helium can diffuse through rubber,PVC and even glasses? Show two-center-two electron bonds and three-center-four electron bonds in B2H6?

    asked by Edd on August 22, 2014
  64. Calculus

    On Dick's birthday, his brother Harry is seventeen years younger than three times Dick's age. The boys father, Tom, is twelve years older than twice Harry's age. If Dick is seven years younger than his brother, how many candles are on Dick's cake?

    asked by Jas on February 13, 2008
  65. algebra

    For the years 2010 to 2050, the projected percentage P of the U.S. population that will be 18 to 24 years old during year t is estimated by P= -0.025t+ 60.35. complete the table t 2010 2020 2030 2040 2050 p use the table to find the year when the

    asked by tee on March 14, 2013
  66. physics

    1. A 3.25 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.195 s, what is the average force exerted on the ball by the

    asked by Elisa on July 7, 2008
  67. childcare

    will someone plz help with this....thanks Provide the titles, authors, publishers, and copyright dates of two picture books concerning children with disabling conditions. The copyright dates should be within the past five years. Note: The books’

    asked by Ms.Dionn on July 20, 2010
  68. math

    a man accepts a position at 14,250 basic salary with agreement that he will receive a 2% increase every year for 3 years. what will his salary be at the end of 3 years

    asked by arvee on September 22, 2016
  69. Algebra

    An account with $300 in it has been earning 3% annual interest compounded continuously for 10 years with no deposits or withdrawals in that time. How much was in the account 4 years ago.

    asked by Heather on August 2, 2012
  70. Maths

    in how many years will rs. 6750 amount to rs. 8000 at 5 percent S.I. ? the answer is 3 years 8 months 13 and half days but i don't know the process please give answer.

    asked by Raghav on February 10, 2017
  71. Chemistry

    The half – life for the disintegration of radium is 1590 years. Calculate the rate constant in seconds and also how many years will be taken for the disintegration of 80 percent of the material?

    asked by Thomas Tai Kants on August 13, 2018
  72. Algebra

    If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.1 seconds or less?

    asked by Amber on September 22, 2011
  73. Math

    One-third of Derick's age two years ago is equal to a quarter of his age four years from now. How old is he now? Please provide the following: -Representation -Equation -Solution -Answer -Checking

    asked by RR on March 10, 2013
  74. Maths

    Amount wanted after 3 years is 300,000 and 500,000 after 5 years. Find present value of p when 12peecent interest is compounded bimonthly.

    asked by Abdul Rehman on March 1, 2017
  75. algebra 2 Equations and Inequalities

    In 90% of the last 30 years, the rainfall at shell beach has varied no more than 6.5 of its mean value of 24 inches. Write and solve an absolute value inequality to describe the rainfall in the other 10% of the past 30 years.

    asked by aj on September 18, 2007
  76. English

    Hello. I will be very grateful if you help me with a few questions. 1) Do you think it's possible to use "during" and "over" in the following phrase: "During the years since his death / Over the years since his death, he has been considered ..."? 2) Do you

    asked by Nalmi on February 2, 2014
  77. calculus

    Assume a substance has a half-life of 11 years and the initial amount is 144 grams. How much remains at the end of 5 years? How long will it be until only 30 % remains?

    asked by nick on September 14, 2010
  78. Math

    Estimate the total number of years of service of 200 factory workers based on a sample size of n=5 where the years of service reported are 12, 8, 20, 5, 12

    asked by Lola on February 3, 2014
  79. algegra

    an editor gets a 2110 raise each year. after 8 years she makes 51,700 per year. write an equation that gives her income as a function of how many years she has worked

    asked by aaron on October 20, 2013
  80. Math

    Myrna Lewis wishes to have $4,000 in four years to tour Europe. How much must she invest today at 8% interest compounded quarterly to have $4,000 in four years?

    asked by Peter on July 4, 2014
  81. chemistry

    What would be the mass ratio of Pb-208/Th-232 in a meteorite that is approximately 4.5 × 10^9 years old? The half-life of Th-232 is 1.39 x 10^10 years i'm used t= 3.32 t(1/2) logNo/N but the result is not correct !?

    asked by ahmed on January 14, 2016
  82. Math

    A stock valued at $756 has been declining steadily at the rate of 4% a year for the last few years. If this decline continues, predict what the value of the stock will be at the end of 3 years.

    asked by Haylie on May 8, 2012
  83. algebra

    : if the formula R=-0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.1 seconds or less.

    asked by jackie on August 13, 2011
  84. Math

    Tim deposits $10 every month into retirement account which averages 18% interest compounded monthly. How much will be in this account after 45 years? (The number of years from age 20 to 65).

    asked by Mai on April 23, 2014
  85. algebra

    If p(t) is the profit (in dollars) that I expect my business to earn t years after opening, use functional notation to express my expected profit after 4 years and 6 months.

    asked by amber on February 19, 2011
  86. Business math

    Jimmy wants to buy a jeep in 5 years. If his bank pays 12% interest compounded annually, what must jimmy deposit today to have 15,000 in 5 years?

    asked by Geia on December 11, 2013
  87. Math

    THe Acme Industrial Tech College has fallen on hard times. Last year its enrollment dropped by 20%, and this year enrollement dropped another 15% from last years. Next year the college expected to have 50% of this years enrollment. What percent of

    asked by Jamie on July 29, 2017
  88. MATHS

    Ruby invested an amount of Rs. 5,800 for 2 years. At what rate of compound interest will she get an amount of Rs. 6394•5 at the end of two years ?

    asked by sowmya on January 10, 2015
  89. Math

    Money invested in compound interest amount to rs 27783 in 3 years and rs 26460 in 2 years what is the rate percent of interest ?

    asked by Jatin on July 22, 2018
  90. CHemistry

    The half-life of tritium is approximately 12 years. What will be the molar ratio of tritium to helium-3 in a sealed sampel after 25 years?



    asked by Laura on April 8, 2010
  91. College algerba

    The​ half-life of a certain radioactive element is about 1500 years. After 2800 ​years, what percentage P of a sample of this element​ remains?

    asked by Samantha on November 14, 2016
  92. Math

    If someone takes out a Reverse Mortgage of $200,000 at 6.8% Interest how much will they owe in five years time and ten years time

    asked by Sandi on February 16, 2015
  93. algebra

    Thabos brother is 5 years younger than him.Their combined age is half their sisters age.Their sister is 12 years.How old is Thabo?

    asked by pearl on September 6, 2015
  94. Algebra II

    the original value of a car was 16,800 after 2 years the cars value has depreciated to 9,000 find the value of the car after 5 years to the nearest dollar

    asked by Chyenne on March 20, 2017
  95. US Government

    In the beginning of our nation seats were reapportioned after the first three years, but today we reapportion seats in the House every 10 years. A) True B) False

    asked by Casey on July 12, 2014
  96. Astronomy

    An astronomical unit can be thought of as... a 25 light years b 19 earth years c 93 million miles d 100 billion miles

    asked by Red on September 6, 2016
  97. math

    Five years after purchase, a machine has a value of $300. The depreciation rate is 26% per year. Calculate the value of the machine when it was bought five years ago.?

    asked by nick on October 6, 2016
  98. Algebra-Problems

    Please help with my word problems? Solve the problem. The rabbit population in a forest area grows at the rate of 6% monthly. If there are 260 rabbits in April, find how many rabbits (rounded to the nearest whole number) should be expected by next April.

    asked by Stacey on October 25, 2007
  99. Word Problems-Math

    Please help with my word problems? Solve the problem. The rabbit population in a forest area grows at the rate of 6% monthly. If there are 260 rabbits in April, find how many rabbits (rounded to the nearest whole number) should be expected by next April.

    asked by Stacey on October 24, 2007
  100. physics

    There are two blocks connected by a string and tied to a wall on an incline. The mass of the lower block is 1.0kg; the mass of the upper block is 2.0kg. Given that the angle of the incline is 31*, find the tension in (a) the string connecting the two

    asked by Erin on October 2, 2011