1. 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
  2. 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
  3. physics

    A 8.5 kg block intially at rest is pulled to the rightr along a horizontal, frictionless surface by a constant horizontal force of 15.6 Newtons. Find the speed of the block after 2.8 meter

    asked by Sarh on October 31, 2010
  4. 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
  5. 11th grade

    A 7.8 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 2.8 m. Answer in units of m/s

    asked by joshuaJR on November 7, 2010
  6. Math

    A trapezium shows a wooden block in the form of a prism. PQRS is a trapezium with pq//SR. Pq=7cm,PS=5cm and SR=4cm.if the block is 12cm long, calculate its volume.

    asked by Dolapo on October 27, 2016
  7. 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
  8. science

    A 5.3-g bullet is fired horizontally into a 3.6-kg block of wood suspended by a rope from the ceiling. The block swings in an arc, rising 5.4 mm above its lowest position. The velocity of the bullet was:

    asked by haddad on August 16, 2015
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. math

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

    asked by don on April 30, 2012
  33. Socials HELP QUICK!

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

    asked by Bethany on January 13, 2014
  34. history

    describe the unique architecture of the houses of khaplu?

    asked by esha on August 5, 2016
  35. geography

    why environment educational centre should placed near township houses

    asked by simba villa on July 2, 2018
  36. government

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

    asked by Reina Bonilla on January 15, 2015
  37. social studies

    what type of houses did people live in on the plains

    asked by LaShae on January 22, 2009
  38. world history

    What was the goal of Americanization programs in settlement houses?

    asked by justin on January 14, 2014
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. 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
  60. 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
  61. 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
  62. 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
  63. 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
  64. 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
  65. 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
  66. 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
  67. 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
  68. 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
  69. 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
  70. 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
  71. 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
  72. 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
  73. 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
  74. 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
  75. 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
  76. 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
  77. 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
  78. 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
  79. 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
  80. 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
  81. 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
  82. 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
  83. English

    1. Most boys grow a lot between the age of 9 and 14. 2. Most boys grow a lot between the ages of 9 and 14. (Which one is correct? Do we have to use 'ages' or 'age' in the sentence?)

    asked by rfvv on May 26, 2010
  84. 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
  85. 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
  86. Language arts

    In the first stanza, while lines rhyme? A. Lines 1 and 3. 1. It shall flash through coming ages, 3. And eyes now dim with sorrow B. Lines 2 and 4 2. It shall light the distant years; 4. Shall be brighter through their tears. C. Lines 3 and 4 3. And eyes

    asked by Callie on February 25, 2015
  87. 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
  88. 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
  89. science ( physics)

    hello, i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled along the floor by an elastic band ? my solution and my ideas: What does it mean by average froce of friction? I first weighed

    asked by charlie on May 30, 2007
  90. Physics

    A 330.0 g block is dropped onto a vertical spring with a spring constant k = 234.0 N/m. The block becomes attached to the spring, and the spring compresses 0.26 m before momentarily stopping. A) While the spring is being compressed, what what is the change

    asked by Kat on September 7, 2014
  91. physics

    A 2kg block situated on a rough incline is connected to a spring of negligible mass having a spring costant of 100N/m.the pulley is frictionless.the block is released from rest when the spring is unstretched.the block moves 20 cm down the incline before

    asked by virginia on April 2, 2015
  92. Math

    When Curtis was born, his parents began depositing $1000 at the end of every year into an annuity to save for his college education. If the account paid 7% compounded annually for the first 10 years and then dropped to 5% for the next eight years, how much

    asked by Jennifer on December 12, 2014
  93. science

    To measure the static friction coefficient between a 1.7-kg block and a vertical wall, the setup shown in the drawing is used. A spring (spring constant = 416 N/m) is attached to the block. Someone pushes on the end of the spring in a direction

    asked by xxxxxxx on January 6, 2016
  94. physics

    To measure the static friction coefficient between a 1.6-kg block and a vertical wall, the setup shown in the drawing is used. A spring (spring constant = 400 N/m) is attached to the block. Someone pushes on the end of the spring in a direction

    asked by Donna on November 26, 2013
  95. Pre Calc

    Naturalists findthat the populations of some kinds of predatory animals vary periodically. Assume that the population of foxes in a certain forext vareis sinusoidally iwth time. REcord started being kept when time t = 0 years. A minimum number, 200 foxes,

    asked by Joe on December 7, 2009
  96. Physics. PLEASE HELP!!

    A 1.3 kg steel ball and 8 m cord of negligi-ble mass make up a simple pendulum that can pivot without friction about the point O. This pendulum is released from rest in a horizontal position and when the ball is at its lowest point it strikes a 1.3 kg

    asked by Amber on April 8, 2012
  97. AP Chem

    I missed a lab in class a week ago and had to make it up just the other day. My teacher didn't have time to explain the lab to me, so he gave me a brief overview of the procedure. The objective of the lab was to calculate the specific heat of an unknown

    asked by Jess on February 8, 2007
  98. physics

    Problem: Two blocks of metals have the same mass. The first block has a volume of 827 cm^3 and a density of 4.50g/cm^3.Thesecond block has a volume of 193cm^3. What is the density of thesecond block ? Solution: (1) 4.50x827=3720 (2)3720/193=19.3 1. Give an

    asked by andrea on January 24, 2011
  99. physics

    Problem: Two blocks of metals have the same mass. The first block has a volume of 827 cm^3 and a density of 4.50g/cm^3.Thesecond block has a volume of 193cm^3. What is the density of thesecond block ? Solution: (1) 4.50x827=3720 (2)3720/193=19.3 1. Give an

    asked by andrea on January 25, 2011
  100. physics help please

    The Sun orbits the Milky Way galaxy once each 2.60 * 10^8 years, with a roughly circular orbit averaging 3 * 10^4 light years in radius. Calculate the average speed of the sun in m/s. Whew! Should I convert the 3*10^4 light years to meters, and then divide

    asked by anonymous on January 6, 2018