1. physics

    A 25 g bullet traveling at 280 m/s passes completely through a wooden block, initially at rest on a smooth table. The block has a mass of 1000 g. The bullet emerges traveling in the same direction, but at 50 m/s. What percentage of total kinetic energy is

    asked by Rebecca on November 16, 2011
  2. physics

    A spring (k=200N/m) is fixed at the top of a frictionless plane inclined at an angle of 40 degrees. A 1 kg block is projected up the plane from an initial position that is distance d=0.60m from the end of the relaxed spring, with an initial kinetic energy

    asked by James on August 1, 2010
  3. physics

    A spring (k=200N/m) is fixed at the top of a frictionless plane inclined at an angle of 40 degrees. A 1 kg block is projected up the plane from an initial position that is distance d=0.60m from the end of the relaxed spring, with an initial kinetic energy

    asked by James on July 27, 2010
  4. Economics

    A man wishes to bequeath to his daughter P20,000 ten years from now. What amount should he invest now if it will earn interest of 8% compounded annually during the first 5 years and 12% compounded quarterly during the next 5 years?

    asked by Student on June 25, 2018
  5. algebra

    Abraham Lincoln, gettysburg address begins with the phrase (four score and seven years ago.) He was refering to a period of time that was 87 years long. How many years are represented by a score? is the answer 2 or is it 12.43

    asked by bianca on September 9, 2010
  6. math

    write and solve an inequalit for the following. Flix Theater has a reduced ticket price for children who are at least two years old but less than 13 years old. The same price is given to seniors who are at least 65 years old. Also model these ranges on a

    asked by Deep on January 23, 2010
  7. Physics - Scott help!

    1. A block of mass 57.1 kg rests on a slope having an angle of elevation of 28.3°. If pushing downhill on the block with a force just exceeding 162 N and parallel to the slope is sufficient to cause the block to start moving, find the coefficient of

    asked by Cameron on October 3, 2018
  8. Physics

    1. A block of mass 57.1 kg rests on a slope having an angle of elevation of 28.3°. If pushing downhill on the block with a force just exceeding 162 N and parallel to the slope is sufficient to cause the block to start moving, find the coefficient of

    asked by Cameron on October 3, 2018
  9. Math

    The three Smith children have a combined age of 50. The youngest is half as old as the oldest. Ten years ago, the oldest was 7 times as the youngest. How old were the children ten years ago? (3 answers) I don't know if this is correct, can you help?

    asked by Sidney on January 15, 2016
  10. physics

    a block (mass m1) on a smooth horizontal surface, connected by a thin cord that passes over a pulley to as second block (m2), which hangs vertically. Ignore friction and the masses of the pulley and cord. If m1 = 13.0 kg and m2 = 6.0 kg determine the

    asked by physics on July 14, 2009
  11. probability

    Suppose the probability of surviving for 5 years after being diagnosed with a particular cancer is 0.60; and the probability of surviving 10 years is 0.20. If a person survives 5 years, what is the probability that she will survive 10 years.

    asked by Anonymous on July 14, 2014
  12. Physics

    A block of mass m = 5.0 kg is pulled along a rough horizontal surface by a rope as sketched in the figure below. ( rope is at a 30 degree angle from the horizontal) The tension in the rope is 50 N, and the coefficient of kinetic friction between the block

    asked by Wrenn on October 14, 2015
  13. Calculus

    I am confused on how to solve this problem : $5000 is invested for 4 years at 7% per annum compound interest. a. what will the amount be at the end of this period? b. what is the expression for the value of the investment after n full years? c. the

    asked by Jess on February 15, 2007
  14. Physics

    If a 5.40g bullet is fired horizontally into a suspended(hanging)10kg block of wood and causes the block, with bullet embedded, to move off with horizontal velocity of 0.30m/s, What is the impact velocity of the bullet?

    asked by Kirsten on April 15, 2010
  15. Physics

    If a 5.40g bullet is fired horizontally into a suspended(hanging)10kg block of wood and causes the block, with bullet embedded, to move off with horizontal velocity of 0.30m/s, What is the impact velocity of the bullet?

    asked by Anonymous on April 17, 2010
  16. algebra

    peter is twice as old as paul was when peter was as old as paul is now. the combined ages of peter and paul is is 56 years. how old are peter and paul now?

    asked by roy on March 18, 2017
  17. physics

    a bullet moving with velocity of 100m/s pierces a block of wood and moves out with a velocity of 10m/s.if the thickness of the block reduces to one half of the previous value,what will be the emerging velocity of the bullet?

    asked by armando on September 2, 2011
  18. physics

    A bullet travelling with velocity of 100 ms-1 pierces a block of wood and moves with a velocity of 10 ms-1 . If the thickness of the block reduces to one half of the previous value, what wiil be the emerging velocity of the bullet?

    asked by Ram on January 25, 2014
  19. physics

    An 7.95 g bullet is fired horizontally into a 9.03 kg block of wood on an air table and is embedded in it. After the collision, the block and bullet slide along the frictionless surface together with a speed of 11.6 cm/s. What was the initial speed of the

    asked by Jess on March 20, 2010
  20. physics

    a bullet moving with a velocity of 100m/s pirces a block of wood and moves out with velocity of 10m/s.if thickness of the block reduces tn one half of the previous value what will be the emerging velocity of bullet

    asked by gallium on September 1, 2011
  21. Physics

    A 8.38g bullet is fired into a 4.60kg block suspended as in the figure. The bullet stops in the block, which rises 15.0cm above its initial position. Find initial speed of the bullet.

    asked by Jose on February 13, 2013
  22. physics

    A pulley is suspended by a Cord (C). on one end of the pulley there is a 1.2 kg block and on the other is a 3.2 kg block.Determine the tension in this cord after the masses are released and before one hits the ground. Ignore the mass of the pulley and

    asked by Anonymous on February 15, 2013
  23. age problem (math)

    Nila is now x years old. 3 years ago, her brother ricky was twice as old as she. Write ricky's age 10 years from now in terms of x. (with solution pls... thanks...)

    asked by HELP HELP HELP MNHS on January 27, 2013
  24. Math (2 of 4 question)

    8. Suppose an investment of $5,000 doubles every 12 years. How much is the investment worth after 36 years? After 48 years? Write and solve an exponential equation.

    asked by Name on March 14, 2018
  25. Finance

    If you deposit $4,000 at the end of each of the next 20 years into an account paying 11.2 percent interest, you will have $ in the account in 20 years. How much will you have if you make deposits for 40 years? $

    asked by Carla on July 11, 2010
  26. Math Final *Updated* Since no one knew what it was

    8. Suppose an investment of $5,000 doubles every 12 years. How much is the investment worth after 36 years? After 48 years? Write and solve an exponential equation

    asked by Name on March 14, 2018
  27. Math--Exponential Functions

    Suppose an investment of $500 doubles in value every 15 years. How much is the investment worth after 30 years? After 45 years? please help!!! i don't even understand how to approach this problem! =(

    asked by Kate on February 28, 2010
  28. physics

    A 1.7 kg block is moved at constant speed over a surface for which the coefficient of kinetic friction is 0.27. The displacement is 2 m. It is pushed by a force directed at 25 degrees below the horizontal. Find the work done on the block by: the force. How

    asked by joe on October 29, 2011
  29. keybording and word processing

    11. The main difference between block letter style and modified block letter style is/are the? a. left and right margin settings, b. punctuation style, c. position of the date and closing lines, d. line spacing

    asked by Raksha on June 9, 2008
  30. help! physics

    A 1.7 kg block is moved at constant speed over a surface for which the coefficient of kinetic friction is 0.27. The displacement is 2 m. It is pushed by a force directed at 25 degrees below the horizontal. Find the work done on the block by: the force. How

    asked by joe on October 29, 2011
  31. physics

    a bullet of mass of 12 grams is fired into a large block of mass 1.5 kg suspended from light vertical wires. the bullet imbeds in the block and the whole system rises 10 cm. find the velocity of the bullet just before the collision.

    asked by erin on June 28, 2010
  32. physics

    Two blocks each with weight w are held in place on a frictionless incline. In terms of w ans the angle theda of the incline, calculate the tension in a) the rope connecting the blocks; b) the rope that connects block A to the wall? a) it was wsin(theda) b)

    asked by Chris on November 16, 2006
  33. Physics

    A hammer of mass M is moving at speed v0 when it strikes a nail of negligible mass that is stuck in a wooden block. The hammer is observed to drive the nail a distance L deeper into the block. A) Find the magnitude F of the force that the wooden block

    asked by Garrett on March 18, 2014
  34. physics

    Question Part Points Submissions Used An aluminum block, m1 = 3.00 kg, and a copper block, m2 = 1.14 kg, are connected by a light string over a frictionless pulley. They sit on a steel surface as shown in the figure below, where θ = 45.0°. (See the table

    asked by carlton on October 17, 2011
  35. Physics1

    Two blocks are initially held at rest on 30° frictionless ramps . The 4 kg block is 1.25 m from the base of the ramp and the 3 kg block is 5 m above the base of the ramp. The two blocks are then released and slide down the ramps and onto a frictionless

    asked by Jon Routh on November 18, 2009
  36. physics

    A 7.0-g bullet is fired into a 1.5-kg ballistic pendulum. The bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 12.3 cm. Find the initial speed of the bullet?

    asked by john on October 17, 2010
  37. physics

    a man pulls a 500 N block up a plane inclined 30 degrees with the horizontal with a force 300 N parallel to the plane. what net force tends to pull the block up the plane?

    asked by gigi on January 12, 2011
  38. Physics

    The drawing shows a block (m = 1.5 kg) and a spring (k = 300 N/m) on a frictionless incline. The spring is compressed by x0 = 0.34 m relative to its unstrained position at x = 0 m and then released. What is the speed of the block when the spring is still

    asked by Katha Mayur on November 17, 2010
  39. Math

    You decide to build a pyramid out of wooden blocks. Each block must rest on the corners off 4 other blocks. If there is one block on top and 36 on the bottom, what is the total number of blocks you will need to complete the pyramid?

    asked by Carly on September 14, 2012
  40. phisecs

    .: A 5.0 kg block is moving with constant velocity down a rough incline plane. The coefficients of static and kinetic friction between the block and the incline are 0.25 and 0.20, respectively. What is the inclination angle of the incline plane?

    asked by w on March 24, 2014
  41. Science

    a bullet with mass 0.281 kg is fired from a rifle. It stick into a block of wood with a mass of 17.8 that was at rest. The block/bullet combo moves at 3 m/s. What was the initial velocity of the bullet?

    asked by lara on March 20, 2016
  42. Physics

    A 50 gram block is placed on a frictionless ramp 2 meters above the ground. It slides down the ramp and compresses a 140 N/m spring at the bottom. How far will the spring be compressed when the block is stopped by the spring? say 1.7 m

    asked by Harold on March 17, 2009
  43. chemistry

    a concrete block is heated from by 30 degree C to 50 degree C. The mass of the block is 10kg. Specific heat of concrete is 800J/Kg degree Celcius. Calculate the energy transferred.

    asked by Diksha on July 7, 2014
  44. Customary units

    A sculptor has a 3lb block of clay he adds 24 oz of clay to the block in order to make a sculptor. What is the total weight of the clay before he stars to sculp. (Have to show work)

    asked by Car on December 10, 2013
  45. Finance

    Gretta wants to retire in 13 years. At that time she wants to be able to withdraw $12,500 at the end of each 6 months for 10 years. Assume that money can be deposited at 12% per year compounded semiannually. What exact amount will Gretta need in 13 years?

    asked by Katie on October 20, 2010
  46. MATH help again!

    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 15.9 About how tall do you expect one of these trees to be after 22 years? a. 22.31 ft b. 35.2 ft c. 44.25 ft d. 46.2

    asked by that emo girl! on January 31, 2018
  47. Chem

    Precision, Accuracy, and Percent Error: _______________________________________ Suppose a student measures the volume of an aluminum block three times and records the following data: 8.42 cm^3, 8.41 cm^3, and 8.40 cm^3. The accepted volume of the aluminum

    asked by Paige on September 18, 2015
  48. English

    1. You will be taller than her in a couple of years. (What is the part of speech of 'than' here? Is 'in a couple of years' 'two years' or 'two, three, or four years'?)

    asked by rfvv on June 2, 2010
  49. economics help

    Could you please provide some suggestions to this question: provide one example of a positive externality that may have affected the U.S. economy in the last 5 years. Elaborate on its impact and consequences. Thanks A positive externality occurs when

    asked by Deana on August 24, 2006
  50. solid mensuration

    a certain city block is in the form off parallelogram. two of it's side are each 225 meters long, the other two sides are each 145 meters long. if the distance between the first two pair is 80 meters. find the area of the land in the block and the length

    asked by Anonymous on January 15, 2015
  51. College Physics

    A block weighing 70.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 50.0° to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the plane

    asked by JB on October 9, 2012
  52. Physics

    A 5.20 g pellet is shot horizontally from a BB gun at a speed of 29.1 m/s into a 20.8 g wooden block. The wooden block is attached to a spring and lies on a frictionless table. If the collision is inelastic and the spring constant k = 22.0 N/m, what is the

    asked by Shane on November 15, 2016
  53. university physics

    A 5.20 g pellet is shot horizontally from a BB gun at a speed of 29.1 m/s into a 20.8 g wooden block. The wooden block is attached to a spring and lies on a frictionless table. If the collision is inelastic and the spring constant k = 22.0 N/m, what is the

    asked by lily on November 15, 2016
  54. algebra

    A person is 3 times as old as aonther person but in 15 years she will only be 2 times as old. I found the answer the younger person is 15 years old and the older person is 45 years old. But 15 years from now the younger person will be 30 years old and the

    asked by Lanise on March 17, 2010
  55. Physics

    Problem 3- A block of mass m1 = 4 kg moves from rest under the influence of a varying force F(x) = 4x + 38, where F is in newton and x is in meters, on a rough horizontal surface having a coefficient of kinetic friction of 0.2. The block is connected by a

    asked by Mariam on December 2, 2013
  56. operating system

    Problem 3- A block of mass m1 = 4 kg moves from rest under the influence of a varying force F(x) = 4x + 38, where F is in newton and x is in meters, on a rough horizontal surface having a coefficient of kinetic friction of 0.2. The block is connected by a

    asked by Anonymous on December 3, 2013
  57. Physics

    An block of mass , starting from rest, slides down an inclined plane of length and angle with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is . At the bottom of the incline, the block slides

    asked by sied on October 10, 2013
  58. physics

    A 15 g lead bullet is tested by firing it into a fixed block of wood with a mass of 1.05 kg. The block and the embedded bullet together absorb all the heat generated. After thermal equilibrium has been reached, the system has a change in temperature

    asked by jen on September 23, 2010
  59. PHYSICS

    A block of mass 0.86 kg is suspended by a string which is wrapped so that it is at a radius of 0.061 m from the center of a pulley. The moment of inertia of the pulley is 4.60×10-3 kg·m2. There is friction as the pulley turns. The block starts from rest,

    asked by Emily on October 21, 2012
  60. Physics

    A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

    asked by Jack on March 22, 2013
  61. Physics

    A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm x 2cm x 3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

    asked by Maria on March 20, 2013
  62. physics

    A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

    asked by rita on March 22, 2013
  63. PHYSICS

    A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum

    asked by Anonymous on March 21, 2013
  64. Physics

    A 0.250 kg block on a vertical spring with a spring constant of 4.09 × 10 3 N/m is pushed downward, compressing the spring 0.0900 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s 2 . How

    asked by Angel on December 11, 2011
  65. Physics

    A 2.0kg block hang from a vertical spring causes it to stretch by 200cm. If the 2.0kg block is replaced by a 0.50kg mass and the spring is stretched and released, what are the frequency and period of the oscillations? Please help and provide solutions and

    asked by Ellie on January 22, 2013
  66. Science

    A 450-g block is attached to a spring of spring constant 45 N/m and is in simple harmonic motion on a frictionless surface with an amplitude of 7.5 cm. A second identical block, moving at 12 m/s in line with the spring, strikes the first one when the

    asked by Lucy on June 9, 2016
  67. physics

    You do a physics lab experiment on another planet. A small block is released from rest at the top of a long frictionless ramp that is inclined at an angle of 36.9° above the horizontal. You measure that a small block travels a distance 17.0 m down the

    asked by dianna li on September 22, 2015
  68. science

    a constant force applied at an angle of 20 above the horizonal , pulls a 200 kg block, over a distance of 3 m, on a rough, horizontal floor. the coefficient of kinetic friction is 0.2 show that work done by the kinetic frictional force on the block can be

    asked by Anonymous on May 2, 2016
  69. physics - Energy

    A 0.280 kg block on a vertical spring with a spring constant of 4.12 × 10^ 3 N/m is pushed downward, compressing the spring 0.0600 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s^ 2. How

    asked by rei on January 15, 2012
  70. Math

    1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the

    asked by Morgan on November 27, 2012
  71. Math Project..Please help me..

    1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the

    asked by Morgan on December 13, 2012
  72. Help!!

    1. Samuel is 2/3 as old as his brother. In five years, he will be 3/4 as old as his brother will be. Find their present ages. a. If x = the brother’s age now, write an expression for Samuel’s present age in terms of x. b. Write an expression for the

    asked by Morgan on December 17, 2012
  73. Math

    The blocks of a side walk block are 6ft by 12ft.the blocks for a drive way are 6ft by 12ft.what is the diffrence between the area of the side walk block and the drive way block.what is the perimeter

    asked by Gia on April 2, 2012
  74. I have already answered half of it. MATH!!

    1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 115

    asked by lee on October 28, 2010
  75. math

    1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 115

    asked by Lacy on October 28, 2010
  76. physics

    A block of mass M1 = 0.320 kg is initially at rest on a cart of mass M2 = 0.680 kg with the cart initially at rest on a level air track. The coefficient of static friction between the block and the cart is ?s = 0.610, but there is essentially no friction

    asked by Mke on September 10, 2014
  77. Algebra

    In 1992 the life expectency of males in a certain counrty was 73.4 years. In 1999 it was 76.7 years. Let E represent the life expectancy in years t and let t represent the number of years since 1992.

    asked by A.W. on March 23, 2009
  78. mat/116

    In 1195 the life expectancy of males in a certain country was 66.5 years. In 1999 it was 69.1 years. Let E rep. the life expectancy in years t and let t rep. the number of years since 1995

    asked by derrius on April 1, 2011
  79. Physics

    A swimmer dives off a block into the water. The block is 31 inches above the surface of the water. Using projectile motion, what angle did they dive to reach point A on the surface of the water? I don't know what the variables stand for in this problem. Xf

    asked by Samantha on May 2, 2016
  80. Physics

    A 6.2 g bullet is fired into a 2 kg ballistic pendulum. The bullet emerges from the block with a speed of 281 m/s, and the block rises to a maximum height of 15 cm . Find the initial speed of the bullet. The acceleration due to gravity is 9.8 m/s 2 .

    asked by Somya on December 13, 2016
  81. PHYSICS HELP ASAP

    a 3 kg block slides down a frictionless plane inclined 20 degrees to the horizontal. If the length of the plane's surface is 1.50m, how much work is done, and by what force? suppose the coefficient of kinetic friction between the block and the plane. What

    asked by mandy on January 10, 2011
  82. Physics

    150kg cart is traveling right 3m/s. a 20kg block of coal comes from the cart at 38degrees below the horizontal. The new velocity of the cart with the block is 3.95m/s. What is the initial speed of the coal.

    asked by Frustrated on April 14, 2013
  83. physics

    A 150 N/m, 5 m spring on a 26 degree incline is compressed 2.3 m and a 5 kg block is placed on it. If we neglect friction, how far up the incline from where it starts will the block travel? How fast will it be traveling when it is 0.2 m up the incline from

    asked by Bob on November 5, 2008
  84. Physics

    A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf

    asked by Ali on September 20, 2010
  85. Physics

    A 6.0 kg block,starting from rest, slides down a frictionless incline of length 2.0 m. When it arrives at the bottom of the incline its speed is vf. At what distance from the top of the incline is the speed of the block .5 vf

    asked by Ali on September 20, 2010
  86. Physical

    A cubical block of wood of side 0.5 m floats in water. Given that the densities of wood and water are 800 and 1000 kg/m3 respectively Calculate the depth of the block immersed in water.

    asked by Edward on November 1, 2016
  87. Science

    A plastic block has sides that measure 4 centimeters, 2 centimeters, and 3 centimeters. Its mass is 19.2 grams. Predict whether the block will float in water. Will it float in olive oil?

    asked by RJ on April 21, 2010
  88. physics

    A 150 N/m, 5 m spring on a 26 degree incline is compressed 2.3 m and a 5 kg block is placed on it. If we neglect friction, how far up the incline from where it starts will the block travel? How fast will it be traveling when it is 0.2 m up the incline from

    asked by Max on November 6, 2008
  89. humanities

    what are the causes of dark ages?

    asked by Hansel on September 4, 2012
  90. Physics

    3- A 5.0 Kg block is released from point A in the figure below. It travels along the smooth surface A  E except for the part B  C where the surface is rough. Point A is 3 m above the lowest point C. The block continues in its motion up the surface

    asked by Maryam on May 25, 2013
  91. Physics

    3- A 5.0 Kg block is released from point A in the figure below. It travels along the smooth surface A  E except for the part B  C where the surface is rough. Point A is 3 m above the lowest point C. The block continues in its motion up the surface

    asked by Maryam on May 25, 2013
  92. Maths

    Steve - you answered this question earlier for someone else and gave them the formula for how to answer it. I have the same problem in my homework and have used the formula you gave, but have got an answer that does not appear in the answer options. I got

    asked by Lauren on July 8, 2016
  93. Maths

    Steve - you answered this question earlier for someone else and gave them the formula for how to answer it. I have the same problem in my homework and have used the formula you gave, but have got an answer that does not appear in the answer options. I got

    asked by Lauren on July 7, 2016
  94. math

    Jay is twice as old as Sandy and 2 years younger than Mike Mike is 7 years older than Sandy how old is jay ? 6 years old? 8 years old? 10 years old? 12 years old?

    asked by kimmy on March 29, 2016
  95. math

    Jay is as twice as old as Sandy and 2 years younger than Mike Mike is 7 years older than Sandy how old is jay? 6 years old 8 years old 10 years old 12 years old

    asked by kimmy on March 29, 2016
  96. Math help!

    The number of students taking sophomore mathematics at Union College has been decreasing at the rate of 20 per year for many years. Assuming this trend continues, write a multiplication problem that describes the change in the number of sophomores taking

    asked by KG on October 1, 2014
  97. maths

    8 cleaners can clean an office block in 3 hours. If two cleaners are off ill,how long will it take the rest to clean the block.

    asked by macy on October 1, 2018
  98. pysics

    ;A 20-N block lifted straight upward by a hand applying a force of 20 N. If the block is lifted 1 m, who much work does the hand do?

    asked by ang on February 9, 2016
  99. Physics

    A block accelerates at 3.2 m/s down a plane inclined at an angle 28.0◦ Find µk between the block and the inclined plane. The acceleration of gravity is 9.8 m/s2.

    asked by Kyla on November 13, 2013
  100. English

    The mailperson's job is to put the envelop's in every mailbox on the block Word used in correct every Block Envelop's Mailperson's

    asked by Linda on May 20, 2015