1. physics

    a bullet of mass 10gm travels horizentaly with v=100m/sec and it is absorted by wooden block of mass 990gm.suspended verticle height through which the block...?

    asked by sajal on September 18, 2013
  2. Physics

    A 10 kg block rests on a frictionless table and is whirled in a circle and kept in a radius of 1.6 m by a rope attached to a peg. What is the tension in the rope if the block has a linear speed of 18 m/s? __N

    asked by Sam on March 4, 2012
  3. physics

    A 1.20 block is attached to a spring with spring constant 14.0 . While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50.0 . What is the amplitude of the subsequent oscillations?

    asked by Mark on September 22, 2010
  4. physics

    Two forces, F1 and F2 act on the 7.00-kg block shown in the drawing. The magnitudes of the forces are F1=59.0 N and F2=33.0N. What is the horizontal acceleration (magnitude and direction) of the block? F1 makes a 70 degree angle with the horizon.

    asked by a person on October 1, 2012
  5. Physics

    A 8.22 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 16.8 N. Find the speed of the block after it has moved 2.3 m. Answer in units of m/s

    asked by April on December 29, 2011
  6. College Physics

    A 6.76 kg block is attached to a spring with spring constant 36.9 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 57 cm/s. What are The amplitude of the subsequent oscillations?

    asked by Anonymous on April 17, 2010
  7. phsyics

    The block shown in figure below lies on a smooth plane tilted at an angle è = 21.5° to the horizontal. Determine the acceleration of the block as it slides down the plane. Ignore friction.

    asked by Tiffany on October 28, 2015
  8. Physics

    A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. What is the force constant of the spring?

    asked by Lauren on October 18, 2010
  9. Physics

    A 1.5 kg block is connected by a rope across a 50-cm-diameter, 2.0 kg, frictionless pulley. A constant 10 N tension is applied to the other end of the rope. Starting from rest, how long does it take the block to move 30 cm?

    asked by Sandhu on November 8, 2009
  10. Math

    a metal block of length 4cm,breadth3cm and height2.5cm weighs 500g.what is the mass of a block of length5cm,breadth4cm,and height3cm made of same metal

    asked by Babul on October 21, 2018
  11. physics

    A 2.25 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 19.6 N. Find the speed of the block after it has moced 4.72 m. Answer in units of m/s.

    asked by luma on November 28, 2015
  12. physics

    A 9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 18.8 N. Find the speed of the block after it has moved 3.3 m. Answer in units of m/s.

    asked by Anonymous on November 30, 2010
  13. physics

    A 7g bullet going at 300m/s hits and embeds itself into a 3.456kg block held on a frictionless table by a spring with k = 40N/m. Find the speed of the block and bullet after collision.

    asked by valerie on November 8, 2013
  14. physics

    a 1 kg dart moving horizntally at 10 m/s sticks to a wood block of mass 9 kg which slides across a friction free level surface. what is the speed of the block and dart after collision?

    asked by lisa on November 23, 2010
  15. Physics

    A 8.9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 12.1 N. Find the speed of the block after it has moved 3.3 m. Answer in units of m/s

    asked by Mckenna on November 4, 2014
  16. Physics

    Block 1 sits on a table with rope that is attached to block 2 hanging over the edge where m1 = 43 kg and m2 = 11 kg. Assume that there is no friction between m1 and the table. Find the acceleration of the crates and the tension in the string

    asked by Anne on October 20, 2012
  17. PHYSICS( FRICTION)

    A block of 1kg is kept on another block of 2kg in a horizontal surface. Coefficient of friction between two blocks is 0.4. The blocks are given velocities of 2m/s and 8m/s in same direction.The time when relative motion between them will stop =..???

    asked by Anonymous on December 13, 2015
  18. physics (simple harmonic motion)

    If the phase angle for a block-spring system in SHM is π/5 rad and the block's position is given x = xm cos(ωt + ϕ), what is the ratio of the kinetic energy to the potential energy at time t = 0?

    asked by rock on February 5, 2011
  19. Physics

    A 3.8 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 13.5 N. Find the speed of the block after it has moved 4.22 m. Answer in units of m/s

    asked by Najah on October 21, 2012
  20. Physics

    A 3.3 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.8 N. Find the speed of the block after it has moved 3.2 m. Answer in units of m/s.

    asked by Wendia on September 27, 2010
  21. English

    Imagine what will happen in the future world and write down sentences related to the future world. 1. We will go to Mars. 2. We will make robots clean the house. 3. We will not get sick. 4. We will fly in the air. 5. We will go to the USA in 10 minutes

    asked by rfvv on April 14, 2015
  22. School-Age Children

    Melissa plays with the same four girls everyday.She has a lot of energy, is independent, and is concerned about what her friends think. Melissa likes soccer and baseball and takes pleasure in beating the boy's team.Melissa is most likely to be A.3-5

    asked by Cynthia on March 11, 2009
  23. PHYSICS

    A 6.53-kg block initially at rest is pulled to the right along a horizontal surface by a constant force of 125 N applied at an angle θ above the horizontal. The coefficient of kinetic friction between the block and the horizontal surface is 0.150. At what

    asked by ROMAN on November 15, 2016
  24. Physics

    A 6 kg block free to move on a horizontal, frictionless surface is attached to a spring. The spring is compressed 0.16 m from equi- librium and released. The speed of the block is 1.44 m/s when it passes the equilibrium po- sition of the spring. The same

    asked by Alex on January 6, 2014
  25. physics

    A block of mass m is initially at rest at the top of an inclined plane with a height = 4.4 m which makes and angle of θ = 17 degrees with respect to the horizontal. It is observed to be traveling at v = 0.2 m/s a distance d after the end of the inclined

    asked by carlo on October 8, 2013
  26. physics

    A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

    asked by Angel on February 29, 2012
  27. Physics

    A 6 kg block free to move on a horizontal, frictionless surface is attached to a spring. The spring is compressed 0.16 m from equi- librium and released. The speed of the block is 1.44 m/s when it passes the equilibrium po- sition of the spring. The same

    asked by Name on January 5, 2014
  28. physics please help :/

    A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

    asked by Angel on March 1, 2012
  29. physics

    A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

    asked by Angel on February 29, 2012
  30. Physics

    A platform rotates at an angular speed of 2.2 rad/s.  A block rests on the platform a distance of 0.3m from the axis.  Static friction coeffient= 0.5.  Without any external torque acting on the system, the block is moved towards the axis.  Ignore the

    asked by Rita on April 28, 2010
  31. math

    The cost of a minibus was Shilling 950,000. It depreciated in value by 5% per year for the first two years by 15% per year for the subsequent years. (a) Calculate the value of the minibus after years (b) After 5 years the minibus was sold through a dealer

    asked by kudu on April 30, 2015
  32. Physics

    QUESTION: A 200 N/m, 5 m spring on a 20 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 will the block travel? How fast will it be traveling when it is 0.2 m up the incline? EQUATION:

    asked by Phil on January 13, 2009
  33. Physics

    QUESTION: A 200 N/m, 5 m spring on a 20 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 will the block travel? How fast will it be traveling when it is 0.2 m up the incline? EQUATION:

    asked by Phil on January 14, 2009
  34. statistics

    A random sample of the houses in a particular city is selected and the level of radon gas is measured for each house in the sample. The values collected are given below in parts per million (ppm). Experience has shown that radon gas level is approximately

    asked by tea on March 26, 2012
  35. math

    - Juwan and Jake both have money in their pockets. If Juwan gave Jake 15 cent then they both would have the same amount of money. However, if Jake gave Juwan 15 cent , then Juwan would have 5 times as much money as Jake would have. How much money do Juwan

    asked by Jose on November 7, 2012
  36. Calculus

    A popular search engine is targeting European countries where the number of online households is expected to grow at a steady rate. Data was taken over time, and it was found that the number of online houses (in millions) projected can be modeled by the

    asked by Wiz on April 16, 2013
  37. physics

    two different masses have equal, non zero kinetic energies. the momentum of the smaller mass is? what is the magnitude of momentum of a 0.140 baseball traveling at 45.0m/s? a 2.00g bullet hits and becomes embedded in 5.00 kg wood block which is hanging

    asked by tina on February 26, 2009
  38. physics

    two different masses have equal, non zero kinetic energies. the momentum of the smaller mass is? what is the magnitude of momentum of a 0.140 baseball traveling at 45.0m/s? a 2.00g bullet hits and becomes embedded in 5.00 kg wood block which is hanging

    asked by tina on February 26, 2009
  39. Physics

    Block B has a mass of 3.40kg and is moving to the left at a speed of 4.20m/s. Block A has a mass of 6.40kg and is moving to the right. The two blocks undergo a perfectly inelastic collision. What should the velocity of the Block A be in order to have the

    asked by Emily on March 24, 2016
  40. Physics

    Block B has a mass of 4.50kg and is moving to the left at a speed of 4.50m/s. Block A has a mass of 6.50kg and is moving to the right. The two blocks undergo a perfectly inelastic collision. What should the velocity of the Block A be in order to have the

    asked by Ashley on October 14, 2016
  41. Science

    Can anyone help me find the half-life of strontium-90? I also need an explanation on how to do it. Thanks!! Radioactive Decay of Strontium-90: At 0 years: 100% remaining At 28 years: 50% remaining At 56 years: 25% remaining At 84 years: 10% remaining At

    asked by Jane on March 12, 2015
  42. Macroeconomics

    1). Kelly purchased ten shares of Gentech stock for $200 in year 1 and sold all the shares in year 2 for $220 a share. Between year 1 and year 2, the price level increased by 5%. The tax on capital gains is 50%. If the capital gains tax is on nominal

    asked by Sarah on May 20, 2008
  43. I need HELP bad! Macroeconomics!

    1). Kelly purchased ten shares of Gentech stock for $200 in year 1 and sold all the shares in year 2 for $220 a share. Between year 1 and year 2, the price level increased by 5%. The tax on capital gains is 50%. If the capital gains tax is on nominal

    asked by Sarah on May 20, 2008
  44. statistic

    an employment information service reports that the mean annual salary for full time male workers ages 25 to 34 with a bachelor's degree is $48718. in a random sample of 12 full time males workers ages 25 to 34 with a bachelor's degree, the mean annual

    asked by Ricky on December 6, 2013
  45. government

    how is representation for the states within the two houses of the us congress determined

    asked by Reina Bonilla on January 15, 2015
  46. Socials HELP QUICK!

    WHat are the advantages of pit houses for the Plateaus peoples?

    asked by Bethany on January 13, 2014
  47. math

    there are 122 houses,how many times does the digit 2 appear on the letterboxes?

    asked by don on April 30, 2012
  48. world history

    What was the goal of Americanization programs in settlement houses?

    asked by justin on January 14, 2014
  49. history

    describe the unique architecture of the houses of khaplu?

    asked by esha on August 5, 2016
  50. social studies

    what type of houses did people live in on the plains

    asked by LaShae on January 22, 2009
  51. geography

    why environment educational centre should placed near township houses

    asked by simba villa on July 2, 2018
  52. Physics

    Block A of mass 4.0 kg is on a horizontal, frictionless tabletop and is placed against a spring of negligible mass and spring constant 650 N m. The other end of the spring is attached to a wall. The block is pushed toward the wall until the spring has been

    asked by Joe on September 19, 2010
  53. physics

    A block of mass m = 2.7 kg is released from rest at a height of H = 0.49 m on a curved frictionless ramp. At the foot of the ramp is a spring whose spring constant is k = 515.0 N/m. What is the maximum compression of the spring, x? B)After the spring

    asked by Chris on March 5, 2014
  54. Physics

    A 4kg and a 2kg block are moving along a horizontal frictionless surface. The 4 kg block is moving to the right with a speed of 6 m/s and the 2 kg block is moving to the left with a speed of 3 m/s. The two blocks collide inelastically and then continue to

    asked by Jon Routh on November 18, 2009
  55. Physics

    A block of mass m = 5.2 kg is released from rest at a height of H = 4.0 m on a curved frictionless ramp. At the foot of the ramp is a spring whose spring constant is k = 192.0 N/m. What is the maximum compression of the spring, x? After the spring reaches

    asked by John on December 25, 2013
  56. physics

    A block of mass 10kg moves horizontal with speed 1.5m/s .if constant vertical force 10N acts,the displacement of block from application of force at end of 4second is?

    asked by Anonymous on April 4, 2018
  57. Physics

    A 6.0 kh block, sliding to the east across a horizontal, frictionless surface with a momentum of 30 kg*m/s^, strikes an obstacle. The obstacle exerts an impluse of 10 N*s to the west on the book. The speed of the block after the collision is...

    asked by Priscilla on February 2, 2010
  58. physics

    a ramp was used to lift 25000kg block. block rose 2m in height traveling 30 m along the ramps surface how much uphill friction is needed to push it up the ramp at constant velocity?

    asked by Garnel on January 31, 2013
  59. physics, only smart people answer

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.4 kg and m2 = 9.0 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?

    asked by tsubasa on February 12, 2013
  60. Physics

    Assume a block on unknown weight rests on an incline of 25 degrees and is initially not moving. What push (P) is required to start moving the block if the coefficient of static friction is 0.7?

    asked by Karla on August 31, 2012
  61. physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?

    asked by Becky on September 23, 2012
  62. physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?

    asked by Becky on September 23, 2012
  63. physics

    A 6.00 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.1 N at an angle θ= 19.0° above the horizontal, as shown. What is the speed of the block 3.50 seconds after it starts moving?

    asked by lucy on December 5, 2010
  64. physics

    when a 0.05kg bullet is fired into a block that is suspended by a long cord so that it can swing as a pendulum. if the block is displaced so that its centre of gravity rises by 0.10m,what was the speed of the bullet?

    asked by jenni on December 20, 2011
  65. physics

    A 6.00 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.1 N at an angle θ= 19.0° above the horizontal, as shown. What is the speed of the block 3.50 seconds after it starts moving?

    asked by jamie on December 5, 2010
  66. Physics

    A bullet of mass 10g strikes a wooden block with velocity of 300m/s after penetrating 20cm into it, it's velocity drops to 200m/s. Then average resistance offered by the block is

    asked by Appu on November 27, 2016
  67. Physics

    Assume a block on unknown weight rests on an incline of 25 degrees and is initially not moving. What push (P) is required to start moving the block if the coefficient of static friction is 0.7?

    asked by Karla on August 31, 2012
  68. physics

    A 2.67 kg block starts from rest at the top of a 27.6 incline and accelerates uniformly down the incline, moving 2.89 m in 2.45 s. The acceleration of gravity is 9.81 m/s2 . a) What is the magnitude of the accelera- tion of the block? Answer in units of

    asked by scott on November 6, 2012
  69. PHYICAL

    A 100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient. My dear sir please help me in teaching my son and thank you very much

    asked by bbbb on July 8, 2012
  70. Physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.4 kg and m2 is 9.1 kg, and block 2 is initially at rest 130 cm above the floor, how long does it take block 2 to reach the floor?

    asked by Megan on September 24, 2009
  71. value

    A block slidly on africtionless inclined plane placed an angle of inclination.If the block starts from rest to the top find the time to reach the bottom and the velocity at the bottom?

    asked by value on August 8, 2016
  72. physics

    A block with mass 0.55 kg on a frictionless surface is attached to a spring with spring constant 39 N/m. The block is pulled from the equilibrium position and released. What is the period of the system? answer in seconds...

    asked by caila on February 24, 2011
  73. Physics

    A gun is fired vertically into a 1.60 kg block of wood at rest directly above it. If the bullet has a mass of 21.0 g and a speed of 195 m/s, how high will the block rise into the air after the bullet becomes embedded in it?

    asked by Jeff on January 20, 2016
  74. Physics

    A block of mass 4.6 kg slides 15 m from rest down an inclined plane making an angle of 20 o with the horizontal. If the block takes 10 s to slide down the plane, what is the retarding force due to friction?

    asked by Steve on February 21, 2012
  75. physics

    a large block with a madd of 5kg sits on top of a steep, frictionless hill, which has a height of 45m. what is the velocity of the block by the time it reaches the bottom of the hill?

    asked by Josue on December 13, 2016
  76. physics

    A block is pulled across the floor by a pull of 400 N at an angle of 35˚ with the horizontal. The force of the kinetic friction is 150 N, and the block is moved a horizontal distance of 23 m. What is the resultant work?

    asked by rahul patel on March 31, 2012
  77. physics

    A 5kg block is placed on an inclined plane raised to an angle with it just started to slip down. if its coefficients of friction is 0.3 calculate. and the speed of the block up to the plane if it is being pull up by a force of 30N

    asked by holamyde on December 29, 2014
  78. Physics

    A 3 kg block is being pulled by a string at a constant speed on a surface with a coefficient of kinetic friction of 0.3. If the string is at an angle of 30 degrees with the horizontal, what is the magnitude of the force necessary to pull the block?

    asked by Megan on June 30, 2011
  79. physics

    starting from rest,a 5.20 kg block slides 3.20 m down a rough 30 degrees incline. The coefficient of kinetic friction between the block and the incline is k=0.436. (a)determine the work done by the normal force

    asked by tshimologo on February 12, 2018
  80. Physics

    Can someone explain to me how I can solve this problem? This problem contains multiple parts but I'm stuck on the last two. Here is the full problem: A block of mass 2.5 kg is sliding at 10 m/s on an initially frictionless, horizontal surface. There is

    asked by Bella on November 22, 2018
  81. business math

    If Naomi decides that she will invest $3,000 per year in a 6% annuity for the first ten years, $6,000 for the next ten years, and $9,000 for the next ten years, how much will she accumulate? Treat each ten year period as a separate annuity. After ten years

    asked by Heather on April 6, 2010
  82. project on glasses!

    hey. does anybody have any suggestions on a good way to interestingly present a project on spectacles and their impact on the middle ages??? I think it would be a cool idea to bring in a pair of glasses and to show the very important people that wore them

    asked by narine on October 31, 2006
  83. geometry

    The density of a block of wood is 0.78 grams per cubic centimeters. What is the volume of the block if its mass is 28.8 grams?

    asked by mariah on February 18, 2011
  84. physics

    A 2.40 kg block is in equilibrium on an incline of 36.3 degrees. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline on the block? Answer in units of N

    asked by Anonymous on December 5, 2012
  85. Physics

    A weight W is now placed on the block and 7.7 N is needed to push them both at constant velocity. What is the weight W of the block? Answer in units of N.

    asked by Brandon on January 6, 2011
  86. science

    If a cement block that weighs 50 N must be raised to a height of 5 m, how much work must be done on the block? Work=weight*heightincreased

    asked by ryan on June 17, 2006
  87. College Physics

    A weight W is now placed on the block and 7.7 N is needed to push them both at constant velocity. What is the weight W of the block? Answer in units of N.

    asked by Olivia on January 6, 2011
  88. physics

    A 19.62 kg block is sliding down a 34.52 degree incline at a constant velocity. What is the mu k of kinetic friction between the incline and the block?

    asked by zack on January 15, 2016
  89. gat

    a block of metal has the dimensions of 2cm, 2cm,and 1cm. the block has a mas of 400g.what is the density

    asked by gurl on May 13, 2010
  90. Physics

    A 2.20 kg block is in equilibrium on an incline of 37.3 degrees. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline on the block? Answer in units of N.

    asked by Hugh on March 17, 2011
  91. PLEASE HELP ME IN THIS PHYSICS PROBLEM

    A heat transfer of 9.5 x 10^5 J is required to convert a block of ice at -15°C to water at 15°C. What is the mass of the block of ice?

    asked by JOHN on January 15, 2013
  92. Physics

    Suppose an ice block is heated what are the noticeable effect that the heat must have caused to the ice block.

    asked by Beta plus on October 19, 2009
  93. Physics

    Suppose an ice block is heated what are the noticeable effect that the heat must have caused to the ice block.

    asked by Beta plus on October 19, 2009
  94. Physics

    A block is given an initial velocity of 5.80 m/s up a frictionless 19.5° incline. How far up the incline does the block slide before coming to rest?

    asked by Gaelle on June 11, 2012
  95. Physics

    A 3.0 kg block being pulled across a table by a horizontal force of 80 N also experiences a frictional force of 5 N. What is the acceleration of the block?

    asked by Adriana on July 14, 2010
  96. Physics 11

    A 4.00 kg block is accelerated along a level surface at 3.00 m/s^2. The applied force is 20.0 N. What is the coefficient of friction between the block and the surface?

    asked by Ryan on June 14, 2017
  97. Physics

    A small block of mass m=1.9kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h=52.0m above the bottom of the loop of radius R=19.0m. What is the kinetic ennergy of the mass at the point A on the

    asked by Jean on February 14, 2011
  98. Physics

    A small block of mass m=1.9kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h=52.0m above the bottom of the loop of radius R=19.0m. What is the kinetic ennergy of the mass at the point A on the

    asked by Jean on February 14, 2011
  99. Physics

    A 5.0 kg wooden block is placed on an adjustable inclined plane. (For this problem, μs is approximately 0.55 and μk is approximately 0.25) a) What is the angle of incline above which the block will start to slide down the plane? b) At what angle of

    asked by Yuki on October 12, 2011
  100. physics

    A cubical block of density rB and with sides of length L floats in a liquid of greater density rL. (a) What fraction of the block’s volume is above the surface of the liquid? (b) The liquid is denser than water (density rW) and does not mix with it. If

    asked by mary on February 4, 2016