1. Statistics

    A sample of 53 night-school students' ages is obtained in order to estimate the mean age of night-school students. = 25.7 years. The population variance is 12. (a) Give a point estimate for mu. (b) Find the 95% confidence interval for mu (lower and upper

    asked by Megan on April 2, 2015
  2. physics

    In an experiment to find the speed of 2.4g bullet, it was fired into a 650g block of wood at rest on a friction free surface. If the block(and bullet) moved off with an initial speed of 96cm s-1, what was the speed of the bullet? plz help the teacher gave

    asked by flirtyme on January 13, 2018
  3. algebra

    2. As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a. The sales representative here tells you they also have two floor plans available, but they only have

    asked by Devin on March 31, 2010
  4. Physics

    A block oscillates on a spring and passes its equilibrium position with a speed of .157m/s. It's kinetic energy is zero when the block is at the distance of .1m from equilibrium. Assume no friction between the block and the table. Force is 8.67N. Also mass

    asked by Andrea on March 2, 2008
  5. College Physics

    A 26.5 kg block (m1) is on a horizontal surface, connected to a 6.90 kg block (m2) by a massless string. The frictionless pulley has a radius R = 0.096 m and a moment of inertia I=0.080 kgm2 m2 is hanging straight down from the pulley over the edge of the

    asked by Anonymous on March 5, 2012
  6. Fin- Management

    David purchased a $100,000 participating whole life policy. The annual premium is $2,280. Projected dividends for the first 20 years are $15,624. The cash value after 20 years will be $35,260. If the premiums were invested at 5 percent for 20 years, the

    asked by KEVIN on January 13, 2011
  7. physics

    Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. the hanging block has a mass of 16 kg and the one on the plane has a mass of 8

    asked by emm on January 19, 2010
  8. Math

    Average height of a species of tree (in feet) after a certain number of years Years----------Height 1 ------------- 2.1 2 ------------- 3.2 3 ------------- 6.8 4 ------------- 7.3 5 ------------- 11.2 6 ------------- 12.6 7 ------------- 13.4 8

    asked by Kaai97 on December 14, 2015
  9. Math

    Average height of a species of tree (in feet) after a certain number of years Years----------Height 1 ------------- 2.1 2 ------------- 3.2 3 ------------- 6.8 4 ------------- 7.3 5 ------------- 11.2 6 ------------- 12.6 7 ------------- 13.4 8

    asked by Kaai97 on December 14, 2015
  10. Math

    Average height of a species of tree (in feet) after a certain number of years Years----------Height 1 ------------- 2.1 2 ------------- 3.2 3 ------------- 6.8 4 ------------- 7.3 5 ------------- 11.2 6 ------------- 12.6 7 ------------- 13.4 8

    asked by Kaai97 on December 14, 2015
  11. Annuities and sicking funds

    Janet Woo decided to retire to fla. in 6 years. What amount should Janet invest today so she can withdraw 50000.00 at the end of each year for 20 years after she retires? What will be the balance in the account 2 years after the last deposit. I guess i am

    asked by Scott Ingraham on April 13, 2008
  12. Algebra I

    Average height of a species of tree (in feet) after a certain number of years Years----------Height 1 ------------- 2.1 2 ------------- 3.2 3 ------------- 6.8 4 ------------- 7.3 5 ------------- 11.2 6 ------------- 12.6 7 ------------- 13.4 8

    asked by SAM on November 12, 2017
  13. physics

    a person lifts a 4.3 kg centimeter block a vertical distance of 1.10m. and then carries the block horizontally a distance of 10.0m. How much work is done by the person? How much work is done by gravity?

    asked by Kalynn on January 15, 2013
  14. physics

    a person lifts a 4.3 kg centimeter block a vertical distance of 1.10m. and then carries the block horizontally a distance of 10.0m. How much work is done by the person? How much work is done by gravity?

    asked by Kalynn on January 15, 2013
  15. Math

    Allison has a set of letter block each block is a unit cube. What is the volume of the figure she can build out of only vowels?what is the volume of the figure she can build out of all the letters?

    asked by Anonymous on March 13, 2013
  16. 7th Grade Math

    Mayla's mother is 3 times as old as Mayla. Eight years ago her mother was 7 times as old as Mayla. What are their ages now? A: Mayla 10; her mother 30 B: Mayla 12; her mother 36 C: Mayla 13; her mother 39 D: Mayla 14; her mother 42 I think the answer is B.

    asked by Missy on October 1, 2008
  17. physics

    A block of mass 3 kg initially at rest is pulled along a friction less horizontal surface with a force of 4N. The speed of the block at t=2s is a)4/3 m/s b)8/3m/s c)4 m/s d)8m/s e)24m/s For this problem this is a graph. Some of the points on the graph are

    asked by me on December 29, 2006
  18. Physics

    The two blocks in the figure, of mass m and M respectively, are not attached, but there is a coefficient of static friction u between them. The surface below the heavier block M is frictionless. What is the minimum force magnitude F required to keep the

    asked by John on May 16, 2011
  19. algebra

    Cat Years 1 3 4 6 7 Human Years 13 33 43 63 73 What is the meaning of the slope? Write the slope-intercept form of the equation for the line of fit. Use linear interpolation and your line of fit to estimate the number of human years which will correspond

    asked by Joshua on January 17, 2011
  20. Help please! Math

    A car is designed to last an average of 12 years with a standard deviation of 0.8 years. What is the probability that a car will last less than 10 years?

    asked by Katalina on January 12, 2014
  21. math

    Mrs koh is now 58 years old and corrine is 28 years old. How many years ago was mr skoh 6 times as old as corrine?

    asked by jazel on March 26, 2017
  22. atlantic

    A car is designed to last an average of 12 years with a standard deviation of 0.8 years. What is the probability that a car will last less than 10 years?

    asked by claire on April 6, 2017
  23. History

    I've been looking for the answers to questions on my study guide for a test I will have for a couple hours and I got a lot of them. However, there are some that I still have a hard time finding. Here are the questions. If I can be told even some of these,

    asked by Stefan on March 20, 2016
  24. Physics/Math

    A 3.0 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 18 N at an angle = 45° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the

    asked by COFFEE on February 10, 2007
  25. Physics

    Two blocks of masses 40.0kg and 20.0kg are stacked on a table with the heavier block on top. The coefficient of static friction is 0.600 between the top and bottom blocks and 0.300 between the bottom block and the table. What is the required magnitude of a

    asked by Eric on October 31, 2006
  26. PHYSICS

    A block of mass m lies on a horizontal frictionless surface and is attached to one end of a horizontal spring (spring constant k) whose other end is fixed. The block is initially at rest at the position where the spring is unstretched (x = 0) when a

    asked by Anonymous on October 22, 2011
  27. Statistics Homework

    Statistics Question: Years to Earn Bachelor's Degree Years to Earn Bachelor's Degree: Listed below are the lengths of time (in years) it took for a random sample of college students to earn bachelor's degrees (based on data from the National Center for

    asked by Lexus on May 13, 2016
  28. College Algebra

    (I'm so lost with all this algebra so can someone please help me? I have tried to put some answers in so please tell me if any of my answers are wrong and help with the ones left blank). 2. As you are leaving the community, you notice another new community

    asked by LeAnn/URGENT on November 17, 2009
  29. Algebra

    (I'm so lost with all this algebra so can someone please help me? I have tried to put some answers in so please tell me if any of my answers are wrong and help with the ones left blank). 2. As you are leaving the community, you notice another new community

    asked by LeAnn/Needs turned in within an hour on November 18, 2009
  30. Math

    When Juan divides each of five consecutive integers by his age , the sum of five remainders he gets is 32 . When Nikita ,several years older , divides each of a different set of five consecutive integers by her age , the sum of the five remainders she gets

    asked by Ereny on February 4, 2015
  31. physics

    Physics: maximum force that can be applied to move an object? What is the maximum force F which can be exerted? Given: The friction between the block with mass 14 kg and the wedge with mass 16 kg is 0.19 . The surface between the wedge with mass 16 kg and

    asked by rachel on June 16, 2011
  32. algebra

    At a pet store, Rhonda paid $11.50 for 3 dog bowls and 4 bones. Kelly $13 for 2 dog blows and 8 bones. How much will Andrew pay for 4 dog bowls and 2 bones?

    asked by Anonymous on January 25, 2014
  33. Bussiness

    Assigment: write a business letter according to the background. Background:Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human

    asked by Akram on May 24, 2012
  34. Pysical Features

    Can you give me a breif 2 page summary of all the physical features of Africa Kelly , we don't do your homework for you. Here are sites that will give you good information. http://library.thinkquest.org/16645/overview.shtml

    asked by Kelly on January 14, 2007
  35. physics

    A light spring of constant k = 156 N/m rests vertically on the bottom of a large beaker of water (Fig. P9.34a). A 4.10 kg block of wood (density = 650 kg/m3) is connected to the spring and the block-spring system is allowed to come to static equilibrium

    asked by Ben on December 15, 2011
  36. physics... last one

    Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in Figure P5.63. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is µk = 0.23.

    asked by clueless on November 11, 2010
  37. business statistics

    1-A randomized block design ANOVA has five treatments and four blocks. The computed test statistic (value of F) is 4.35. With a 0.05 significance level, the appropriate table value and conclusion will be? 2-A randomized block experiment having five

    asked by Lesliam on August 11, 2009
  38. physics

    Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is µk = 0.24.

    asked by Chan on October 26, 2009
  39. physics

    Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is μk = 0.28.

    asked by tom on March 15, 2012
  40. Social Studies

    How is New York City not changed from the days when it was called New Amsterdam? A. Its streets still have walls. B. Its houses still look the same. C. It is still a major trading center. D. It still has mostly Dutch residents. My answer- K

    asked by Dddd47906 on July 3, 2014
  41. government

    if no presidential candidate wins a majority of the electoral votes, the president is chosen in a. the senate b. both houses of congress c. the supreme court d. the house of representatives d.

    asked by jere on January 11, 2008
  42. Identifying a Fallacies

    I can't seem to figure out which fallcy this would be, is anyone familiar and could tell me which one for the following statement? 'To parents who think it's a good idea to share parenting, I say, "OK then, let the child stay in the house and you two swap

    asked by Help on April 3, 2012
  43. History

    Which of the following would Not describe Mississippian Indians? A) grew only corn for food****** B) made art and jewelry C) constructed mounds and lodge houses D) had different ranks in their society

    asked by Khaliyl R Testman on September 7, 2018
  44. Physics

    A 12.8 gram bullet embeds itself in a 2.370 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 487 N/m. The maximum compression of the spring is 11.0 centimetres. a) What was the initial speed of the bullet

    asked by Jalopy on November 30, 2012
  45. Physics

    A 14.3 gram bullet embeds itself in a 2.823 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 378 N/m.  The maximum compression of the spring is 13.5 centimetres.   a)  What was the initial speed of the

    asked by Alphonse on November 23, 2012
  46. Physics..=> drwls - I need your help

    I need help seeing if my thoughts are correct and how to do some things. Block 1 of mass 0.200 kg is sliding to the right over a frictionless elevated surface at a speed of 8.00 m / s. The block undergoes an elastic collision with stationary block 2, which

    asked by ~christina~ on February 27, 2008
  47. Earth Science

    1. We start with 400 atoms of Uranium-238. How many remain after 4.5 billion years? _______ After 9 billion years? _______ After 13.5 billion years? ________ 2 . How long will it take for ½ of the original amount of Rubidium-87 to decay? _______ 3.

    asked by 아, 깹송~ on February 8, 2017
  48. math

    Jewel uses 1/8 lb of cheese to make a sandwich in the cafeteria where she works.She purchased a 5 lb block of cheese earlier this week and has already used 1 3/4 lb from the block.Which equation could be used to find n, the number of sandwiches that jewel

    asked by thmas on February 20, 2014
  49. Physics

    A 67.5 kg sprinter exerts a force of 775 N on the starting block which makes a 20 degree angle to the ground. a) What was the horizontal acceleration of the sprinter? b) If the force was exerted for 0.340s, with what speed did the sprinter leave the

    asked by Ash on December 9, 2017
  50. physcs

    A string is wrapped around a uniform solid cylinder of radius 3.10 cm, as shown in the figure. The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block has mass 16.3 kg, and the cylinder has mass 11.2 kg.

    asked by asefa on December 1, 2009
  51. physics

    A block slides a distance d down a frictionless plane and then comes to a stop after sliding a distance s across a rough horizontal plane. What fraction of the distance s does the block slide before its speed is reduced to one-third of the maximum speed it

    asked by andrea on February 22, 2011
  52. physics

    Q: A block A of mass 0.5 kg can slide on a frictionless incline of angle 30o and length 0.8 m kept inside an elevator going up with uniform velocity 2m/s. Find the time taken by the block to slide down the length of the incline if it is released from the

    asked by mohit on August 5, 2015
  53. Physics

    There is a block resting on a table attached to a hanging mass around a pulley. Assume a value of g = 10 m/s2. If there is no friction, and the mass on the table has a value of 5.0 kg and the hanging mass has a value of 1.0 kg, what is the value of the

    asked by Emily on October 28, 2014
  54. math

    megan borrows £5000 to buy a cat at a rate of 8% over 3 years. how much does she have to pay over the three years? if she pays the loan back every month over three years ,how much is her monthly payment? if there was an arrangement fee of £500 for the

    asked by shahd on November 10, 2015
  55. maths

    megan borrows £5000 to buy a cat at a rate of 8% over 3 years. how much does she have to pay over the three years? if she pays the loan back every month over three years ,how much is her monthly payment? if there was an arrangement fee of £500 for the

    asked by shahd on November 10, 2015
  56. Social Studies

    Can anyone help me with a definition for Jewish people during the middle ages?

    asked by Lea on May 1, 2010
  57. Math

    Martha is twice as old as her younger brother. The sum oh their ages is 36. How old are they?

    asked by Jo-Anna on November 28, 2016
  58. math

    Why could the mean of the data set below be misleading? ages of teachers: 29, 38, 39, 26, 29, 29, 39, 77, 38, 29

    asked by nadwa on September 29, 2015
  59. World History

    What institutions preserved learning in the middle ages?

    asked by Nuha Anwar on May 16, 2015
  60. social studies

    What was the main economic system in the middle ages

    asked by glenn on January 12, 2012
  61. Nutrition.

    What are the nutritional needs of adult men and women between the ages of 19 to 65?

    asked by A.W. on March 2, 2009
  62. Math

    Why could the mean of the data set below be misleading? ages of teachers: 29, 38, 39, 26, 29, 29, 39, 77, 38, 29

    asked by Missy on October 9, 2012
  63. math

    A couple has 4 children ages 9,6,4,and 1.What is the probability that they are all girls.

    asked by Amina on January 25, 2012
  64. social studies

    Why did the people of the middle ages fought in the crusades

    asked by rashawn on October 18, 2011
  65. history

    Was Tudor the last royal house of the Middle Ages?

    asked by Tabby on November 28, 2007
  66. biology

    how can i find the circulatory system of a marlin? please help me. i've been looking 4 ages....

    asked by google on May 22, 2010
  67. science

    how is the menan buttes likely to look in future geologic ages

    asked by cameron white on October 31, 2012
  68. SOCIAL STUDIES

    HOW DID THE ICE AGES INFLUENCE HUMAN MIGRATION

    asked by DAVID on September 17, 2009
  69. statistics

    What level of measurment would i use for ages of the members of congress

    asked by Kristine on January 6, 2011
  70. Physics

    A machine in an ice factory exerts 3.06 ✕ 102 N of force to pull a large block of ice up a frictionless slope at constant speed. The force is applied parallel to the slope, and the weight of the block is 1.39 ✕ 104 N. What is the angle of the slope?

    asked by Anonymous on January 13, 2014
  71. Physics

    A bullet whose mass is 0.0015kg leaves a 5kg leaves a 5kg rifle at a muzzle velocity of 800 m/s. It strikes a 7kg block of wood and becomes embedded in it. After the bullet hits the rock, what is the speed of the bullet/ block system?

    asked by Lucas on January 15, 2014
  72. PHYSICS HELP

    m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with

    asked by joe on November 6, 2011
  73. physics emergency

    m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with

    asked by mary on November 4, 2011
  74. PHYSICS

    m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with

    asked by joe on November 4, 2011
  75. PHYSICS HELP

    m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with

    asked by joe on November 6, 2011
  76. physics

    Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord initially holding the blocks together is burned; after this

    asked by Anonymous on November 1, 2009
  77. science

    suppose you have 100grams of radioactive plutonium-239 with a half-life of 24,000 years. how many grams of plutonium-239 will remain after: A)12,000 years B)24,000 years C)96,000 years how do i do this??????

    asked by matt on September 11, 2007
  78. Maths

    Peter invests $12500 for 5 years at 12 percent per annum,compounded monthly foe the first two years, and 14 percent per annum compounded simiannually for the next three years. How much will Peter receive after five years?

    asked by Randi on April 30, 2011
  79. algebra

    Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x4 + 0.067326x3 – 1.4367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is

    asked by Jackster on March 8, 2011
  80. math

    Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001618x4 + 0.057326x3 – 1.1367x2 + 11.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it is

    asked by tan on July 18, 2011
  81. English

    1. You can't buy alcohol until you are twenty years old. 2. You can't buy drinks until you are twenty years old. 3. You can't buy wine until you are twenty years old. 4. You can't buy beeer until you are twenty years old. --------------------------- Are

    asked by rfvv on November 28, 2014
  82. Algebra

    Greta invests $10,000 in an investment that pays 3% interest, compounded annually, for the first three years, then 9% interest, compounded annually, for the last three years. Rui invests $10,000 in an investment that pays r% for all six years. The two

    asked by Cassie on April 2, 2009
  83. 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?

    asked by Sarah on February 9, 2010
  84. math

    The number of years of education of self-employed individuals in the United States has a population mean of 13.6 years and a population standard deviation of 3.0 years. If we survey a random sample of 100 self-employed people to determine the average

    asked by alle on November 1, 2017
  85. Classical Mechanics Physics

    A block of mass m= 3 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=βt2, where β= 1.2 N/s2. We stop pushing at time t1=5 s [F(t)=0 for t>t1]. (a) First, assume

    asked by Anonymous on December 6, 2013
  86. Social Studies

    3. How long is the term of a senator? 2 years 4 years 6 years****** Life 4. What is the core function of the executor branch? To make laws To interpret laws To carry out laws To declare laws unconstitutional********

    asked by The Specters on December 4, 2015
  87. finance

    equipment cost $20,000 and is financed over a period of five years at an interest rate of 12%...What is the monthly payment...What is the loan balance at the end of four years and how much interest will have been paid on the loan after five years?

    asked by Loretta on December 1, 2010
  88. math

    1)what is the smallest integer greater than 1 that leaves a remainder of 1 when divided by any of the integers 8,9, and 10? 2) The square root of the difference of (B^2 /16) and (b^2/25) 3) Mr. Baker is 30 years old when his son is 4 years old. In how many

    asked by Jessica on March 28, 2018
  89. Physics

    At an instant the block(M = 33kg) is moving down the slope. Angle between slope and floor = 33deg Force Pulling up the slope 49N at 38deg to the slope What is the acceleration of the block up the slope if the kinetic coefficient of friction is 0.5? My

    asked by Jonathan on August 23, 2015
  90. physics

    A block starts with a speed of 18.0 m/s and slides for a distance of 2.2 m down a 40° ramp (muk = 0.43). What is its final speed? (m/s) Thanks for suggeting the following solution. The block starts with an initial speed of 18.0 m/s.Does it have any

    asked by sandhu on November 28, 2010
  91. physics

    A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of

    asked by Samuel on January 12, 2013
  92. ehglish

    i need to know if i need to add any puctuation?Descriptive paragraph Deborah Paul A loyal Friend My loyal friend Mary Ellen is 48 years old with shoulder length black hair and dark brown eyes. Mary Ellen works full time as an RPN in a nursing home taking

    asked by deborah on February 4, 2010
  93. SUMMARY OF FINANCIAL TIME VALUE OF MONEY

    How much should you invest each month in order to have $800,000 if your rate of return is 5.3% compounded monthly and you want to achieve your goal in 40 years? If you deposit the amount you need to achieve your goal in 20 years, how much will your savings

    asked by Anonymous on December 18, 2016
  94. finacne

    cYou 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%? d. If you can earn 5%, how much will you have to save each

    asked by shelly on October 27, 2013
  95. finance

    I give you a flat yield curve from 0 to 4 years: 2%. You have a five year swap contract that pays annually and want to use it to extend the curve to 5 years. How low can the swap par rate go before forward between 4 and 5 years goes negative?

    asked by sasi on April 4, 2015
  96. Math

    Let x equal the age, in human years, for a dog that is 2 years old or older. For each of your chosen breeds, write an expression to model its age in dog years. [Hint: Use (x-2) in each expression.] the dogs are 2yrs: 23 yrs old 3yrs: 27 yrs old 4yrs: 31

    asked by Alle on November 8, 2016
  97. Geometry

    Let x equal the age, in human years, for a dog that is 2 years old or older. For each of your chosen breeds, write an expression to model its age in dog years. [Hint: Use (x-2) in each expression.] the dogs are 2yrs: 23 yrs old 3yrs: 27 yrs old 4yrs: 31

    asked by DON'T Skip Me pls on November 8, 2016
  98. Physics

    A 1.07 kg block slides across a horizontal surface directly toward a massless spring with spring constant 4,794 N/m. The surface is frictionless except for a rough patch of length 0.461 m that has coefficient of kinetic friction 0.358. The initial velocity

    asked by Jennifer on May 14, 2012
  99. physics

    Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in Figure P5.64. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is µk = 0.25.

    asked by megan on March 3, 2011
  100. Math

    A pipe has an outside diameter of 1.25 inches and an inside diameter of 0.75 inches. If Kelly hacksaws the pipe in two, what fraction of the pipe cross sectional area is sawn when the blade breaks through to the inside?

    asked by Anonymus on February 28, 2011