1. Physics

    A 3.20 kg block starts at rest and slides a distance d down a frictionless 30.0° incline, where it runs into a spring (Fig. 8-6). The block slides an additional 23.0 cm before it is brought to rest momentarily by compressing the spring, whose spring

    asked by Alex on November 19, 2016
  2. Physics

    A small block of mass m1 = 0.400 kg is released from rest at the top of a curved-shaped frictionless wedge of mass m2 = 3.00 kg, which sits on a frictionless horizontal surface as in Figure P9.60a. When the block leaves the wedge, its velocity is measured

    asked by Velocity and Height on October 26, 2010
  3. english

    Choose the correct form of the possessive for the bolded word in the following sentence: "A YEARS worth of hard work has finally paid off.” year years years' *year's Thank You.

    asked by Anonymous on April 30, 2013
  4. Geometry

    For each of the past four years, Paulo has grown 2in. every year. He is now 16 years old and 5ft. 10in tall. He figures that when he is 22 years old he will be 6ft 10in. tll. What would you tell Pauo about his conjecture.

    asked by Jenny on August 23, 2012
  5. statistics

    if a toaster ovens hav an average life expectancy of 9.5 years with a standard deviation of 4.75 years. what is the probability that a toaster oven will last twenty years or will fail in one year or less?

    asked by efe on September 21, 2013
  6. Physics

    A rough inclined plane makes an angle of 30.0° above the horizontal and is 4.00m long measures along the slope. A block which has a mass of 6.26kg is thrown from the top of the plane with an initial velocity of 5.0m/s. Calculate the speed of the block at

    asked by Anonymous on October 30, 2018
  7. Physics

    A rough inclined plane makes an angle of 30.0° above the horizontal and is 4.00m long measures along the slope. A block which has a mass of 6.26kg is thrown from the top of the plane with an initial velocity of 5.0m/s. Calculate the speed of the block at

    asked by Energetic Joules on October 30, 2018
  8. Math

    I am lost, and I bet it is simple, but I have been working with many problems and I keep coming back to this and I grow increasingly confused. How do I begin to solve this problem? In 1993 the life expectancy of males in a certain country was 71.7 years.

    asked by H on January 6, 2010
  9. Social Studies

    Congressional committee must pass along every bill to be debated and voted on by the other members of their respective houses. Is this true or false?

    asked by Shadow on April 18, 2010
  10. English

    how can you compare and contrast Walt Whitman "I Hear America Singing" to John Mellencamp "Little Pink Houses".??

    asked by David on January 3, 2012
  11. English

    how can you compare and contrast Walt Whitman "I Hear America Singing" to John Mellencamp "Little Pink Houses".??

    asked by David on January 3, 2012
  12. math

    Michael invested $1600 per half-year in an IRA each half-year for 9 years earning 9% compounded semi-annually. At the end of 9 years he ceased the IRA payments, but continued to invest his accumulated amount at 10% compounded yearly for the next 8 years.

    asked by melodi on April 6, 2013
  13. phhysics

    picture in your mind a block that slides without friction down a ramp that is inclined at an angle (q) above the horizontal. Initially the block is at rest a distance (s) in meters (measured along the plane) from the bottom. Calculate the time (in seconds)

    asked by Charlene on March 23, 2007
  14. Physics

    The figure shows a 7 kg block being pulled along a frictionless floor by a cord that applies a force of constant magnitude 20 N but with an angle θ(t) that varies with time. When angle θ = 29°, at what rate is the block's acceleration changing if

    asked by John on January 21, 2014
  15. Physics

    A block with a mass of m = 21 kg rests on a frictionless surface and is subject to two forces acting on it. The first force is directed in the negative x-direction with a magnitude of F1 = 9.5 N. The second has a magnitude of F2 = 19.5 N and acts on the

    asked by Maura on February 19, 2014
  16. science

    A 2:35 kg block is pushed 1:57 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 67.5 degree with the horizontal. The acceleration of gravity is 9.8 m/s2. If the coefficient of kinetic friction between the

    asked by aksha on October 21, 2007
  17. physics

    A 32.7-kg block (m1) is on a horizontal surface, connected to a 6.7-kg block (m2) by a massless string as shown in the Figure. The pulley is massless and frictionless. A force of 236.1 N acts on m1 at an angle of 28.7o. The coefficient of kinetic friction

    asked by anonymus on August 18, 2018
  18. physics

    The mass of the heavier block is 28 kg and the mass of the lighter blocks is 14 kg and the magnitude of the force of the connecting string on the smaller block is 24 N. Assume: g = 9.8 m/s^2 and the horizontal surface on which the objects slide is

    asked by michelle on September 28, 2012
  19. Physics

    A 17.9 kg block is dragged over a rough, hor- izontal surface by a constant force of 74.1 N acting at an angle of angle 32.3◦ above the horizontal. The block is displaced 72.4 m and the coefficient of kinetic friction is 0.242. Find the work done by the

    asked by Kaylee on June 22, 2014
  20. 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 15, 2011
  21. 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
  22. 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
  23. 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 24, 2018
  24. 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 22, 2010
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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 14, 2016
  30. 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 13, 2014
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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 1, 2011
  39. 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 14, 2013
  40. 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 August 31, 2011
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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 10, 2010
  47. 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
  48. 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
  49. 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
  50. 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 26, 2013
  51. 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 17, 2017
  52. 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 17, 2014
  53. 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
  54. 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 17, 2009
  55. 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
  56. 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
  57. 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
  58. 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 16, 2009
  59. 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 9, 2013
  60. 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
  61. 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
  62. 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
  63. 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 16, 2010
  64. 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
  65. 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
  66. 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
  67. 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
  68. 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
  69. 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 14, 2016
  70. 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
  71. 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
  72. 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
  73. 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 1, 2013
  74. 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
  75. 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
  76. 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
  77. 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
  78. 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
  79. 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
  80. 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
  81. 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
  82. 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
  83. 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 14, 2012
  84. 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
  85. 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
  86. 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
  87. 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 21, 2015
  88. 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
  89. 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
  90. 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
  91. 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
  92. 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
  93. 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
  94. Science

    Scientists Use Radioactive Dating for wich of the Following A-Identifying the relative ages of rock layers B-**determinating the absolute ages of rocks** C-telling how radioactive substances are D- collecting evidence of fossils Wich of the following

    asked by qwertyuiop[ on December 11, 2018
  95. 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
  96. 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 12, 2016
  97. 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
  98. 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
  99. 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
  100. 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