Physics for Scientists And Engineers Foundations And Connections 1st Edition by Debora M. Katz - Test Bank Instant Download - Complete Test Bank With Answers Sample Questions Are Posted Below 1. In the figure, if the tension in string 1 is 34 N and the tension in string 2 is 24 N, …
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Physics for Scientists And Engineers Foundations And Connections 1st Edition by Debora M. Katz – Test Bank
Instant Download – Complete Test Bank With Answers
Sample Questions Are Posted Below
| 1. In the figure, if the tension in string 1 is 34 N and the tension in string 2 is 24 N, what is the mass of the object shown?
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2. If M = 2.0 kg, what is the tension in string 1?
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3. If M = 6.0 kg, what is the tension in string 1?
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4. If M = 1.1 kg, what is the tension in string 1?
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5. An object of unknown weight is suspended as shown. The tension in rope 1 is 25 lb, and the tension in rope 2 is 31 lb. What is the weight of the suspended object?
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6. If α = 40°, β = 60°, and M = 4.0 kg, determine the tension in string 1.
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7. If α = 40° and the tension in string 2 is 30 N, determine M.
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8. Two forces are the only forces acting on a 3.0-kg object which moves with an acceleration of 3.0 m/s2 in the positive y direction. If one of the forces acts in the positive x direction and has a magnitude of 8.0 N, what is the magnitude of the other force?
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9. The horizontal surface on which the block slides is frictionless. If F = 20 N and M = 5.0 kg, what is the magnitude of the resulting acceleration of the block?
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10. The only two forces acting on a body have magnitudes of 20 N and 35 N and directions that differ by 80°. The resulting acceleration has a magnitude of 20 m/s2. What is the mass of the body?
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11. If the only forces acting on a 2.0-kg mass are , and , what is the magnitude of the acceleration of the particle?
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12. At an instant when a 4.0-kg object has an acceleration equal to m/s2, one of the two forces acting on the object is known to be N. Determine the magnitude of the other force acting on the object.
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13. If F = 4.0 N and m = 2.0 kg, what is the magnitude a of the acceleration for the block shown below? The surface is frictionless.
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14. A block is pushed up a frictionless 30° incline by an applied force as shown. If F = 25 N and M = 3.0 kg, what is the magnitude of the resulting acceleration of the block?
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15. A 5.0-kg object is suspended by a string from the ceiling of an elevator that is accelerating downward at a rate of 2.6 m/s2. What is the tension in the string?
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16. The tension in a string from which a 4.0-kg object is suspended in an elevator is equal to 44 N. What is the acceleration of the elevator?
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17. A 5.0-kg mass is attached to the ceiling of an elevator by a rope whose mass is negligible. What force does the mass exert on the rope when the elevator has an acceleration of 4.0 m/s2 upward?
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18. A 5.0-kg mass is suspended by a string from the ceiling of an elevator that is moving upward with a speed which is decreasing at a constant rate of 2.0 m/s in each second. What is the tension in the string supporting the mass?
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19. A person weighing 0.70 kN rides in an elevator that has an upward acceleration of 1.5 m/s2. What is the magnitude of the force of the elevator floor on the person?
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20. A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
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21. A 2.0-kg block slides on a frictionless 25° inclined plane. A force of 4.6 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
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22. A 2.0-kg block slides on a frictionless 15° inclined plane. A force acting parallel to the incline is applied to the block. The acceleration of the block is 1.5 m/s2 down the incline. What is the applied force?
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23. A 1.5-kg object has a velocity of m/s at t = 0. It is accelerated at a constant rate for five seconds after which it has a velocity of m/s. What is the magnitude of the resultant force acting on the object during this time interval?
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24. A 2.0-kg object has a velocity of m/s at t = 0. A constant resultant force of then acts on the object for 3.0 s. What is the magnitude of the object’s velocity at the end of the 3.0-s interval?
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25. A 1.5-kg mass has an acceleration of . Only two forces act on the mass. If one of the forces is , what is the magnitude of the other force?
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26. Only two forces act on a 3.0-kg mass. One of the forces is 9.0 N east, and the other is 8.0 N in the direction of 62° north of west. What is the magnitude of the acceleration of the mass?
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27. A book is placed on a chair. Then a videocassette is placed on the book. The floor exerts a normal force
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28. The apparent weight of a fish in an elevator is greatest when the elevator
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29. The vector sum of three co-planar forces
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30. When the vector sum of three co-planar forces, , , and , is parallel to , we can conclude that and
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31. A constant force is applied to a body that is already moving. The force is directed at an angle of 60 degrees to the direction of the body’s velocity. What is most likely to happen is that
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32. A juggler throws two balls up to the same height so that they pass each other halfway up when A is rising and B is descending. Ignore air resistance and buoyant forces. Which statement is true of the two balls at that point?
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33. A bumper car is moving at constant velocity when another bumper car starts to push on it with a constant force at an angle of 60 degrees with respect to the first car’s initial velocity. The second bumper car continues pushing in exactly that direction for some time. What is most likely to happen is that
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34. You have a machine which can accelerate pucks on frictionless ice. Starting from rest, the puck travels a distance x in time t when force F is applied. If force 3F is applied, the distance the puck travels in time t is
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35. A constant force F is applied to a body of mass m that initially is headed east at velocity v0 until its velocity becomes −v0. The total time of travel is 2t. The total distance the body travels in that time is
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36. The first of two identical boxes of mass m is sitting on level ground. The second box is sitting on a ramp that makes a 20° angle with the ground. The normal force of the level ground on the first box is ; the normal force of the ramp on the second box is . Which statement is correct?
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| 37. A heavy weight is supported by two cables that exert tensions of magnitude and . Which statement is correct?
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38. Two people, each of 70 kg mass, are riding in an elevator. One is standing on the floor. The other is hanging on a rope suspended from the ceiling. Compare the force the floor exerts on the first person to the force the rope exerts on the second person. Which statement is correct?
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39. Two people, each of 70 kg mass, are riding in an elevator. One is standing on the floor. The other is hanging on a rope suspended from the ceiling. Compare the acceleration of the first person to the acceleration of the second person. Which statement is correct?
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40. The horizontal surface on which the objects slide is frictionless. If M = 2.0 kg, the tension in string 1 is 12 N. Determine F.
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41. The horizontal surface on which the objects slide is frictionless. If F = 12 N, what is the tension in string 1?
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42. The surface of the inclined plane shown is frictionless. If F = 30 N, what is the magnitude of the force exerted on the 3.0-kg block by the 2.0-kg block?
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43. If P = 6.0 N, what is the magnitude of the force exerted on block 1 by block 2?
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44. If F = 5.0 N, what is the magnitude of the force exerted by block 2 on block 1?
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45. An astronaut who weighs 800 N on the surface of the Earth lifts off from planet Zuton in a space ship. The free-fall acceleration on Zuton is 3.0 m/s2 (down). At the moment of liftoff the acceleration of the space ship is 0.50 m/s2 (up). What is the magnitude of the force of the space ship on the astronaut?
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46. The horizontal surface on which the objects slide is frictionless. If M = 1.0 kg and the magnitude of the force of the small block on the large block is 5.2 N, determine F.
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47. The horizontal surface on which the objects slide is frictionless. If F = 6.0 N and M = 1.0 kg, what is the magnitude of the force exerted on the large block by the small block?
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48. A 6.0-kg object is suspended by a vertical string from the ceiling of an elevator which is accelerating upward at a rate of 1.8 m/s2. Determine the tension in the string.
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49. An 8.0-kg object rests on the floor of an elevator which is accelerating downward at a rate of 1.3 m/s2. What is the magnitude of the force the object exerts on the floor of the elevator?
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50. A 70-kg stunt artist rides in a rocket sled which slides along a flat inclined surface. At an instant when the sled’s acceleration has a horizontal component of 6.0 m/s2 and a downward component of 2.8 m/s2, what is the magnitude of the force on the rider by the sled?
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51. If F = 40 N and M = 1.5 kg, what is the tension in the string connecting M and 2M? Assume that all surfaces are frictionless.
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52. The system shown is released from rest and moves 50 cm in 1.0 s. What is the value of M? All surfaces are frictionless.
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53. If F = 40 N and M = 2.0 kg, what is the magnitude of the acceleration of the suspended object? All surfaces are frictionless.
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54. If M = 2.2 kg, what is the tension in the connecting string? The pulley and all surfaces are frictionless.
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55. A 5.0-kg mass sits on the floor of an elevator that has a downward acceleration of 1.0 m/s2. On top of the 5.0-kg mass is an object of unknown mass. The force of the elevator on the 5.0-kg mass is 80 N up. Determine the unknown mass.
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| 56. If the tension, , is 15 N and the magnitude of the acceleration, a, is 3.0 m/s2, what is the mass, m, of the suspended object? Assume that all surfaces and the pulley are frictionless.
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| 57. If F = 8.0 N and M = 1.0 kg, what is the tension in the connecting string? The pulley and all surfaces are frictionless.
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| 58. In the figure, if F = 2.0 N and M = 1.0 kg, what is the tension in the connecting string? The pulley and all surfaces are frictionless.
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59. A 4.0-kg block slides down a 35° incline at a constant speed when a 16-N force is applied acting up and parallel to the incline. What is the coefficient of kinetic friction between the block and the surface of the incline?
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60. A block is pushed across a horizontal surface by the force shown. If the coefficient of kinetic friction between the block and the surface is 0.30, F = 20 N, θ = 30°, and M = 3.0 kg, what is the magnitude of the acceleration of the block?
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61. A 3.0-kg block moves up a 40° incline with constant speed under the action of a 26-N force acting up and parallel to the incline. What magnitude force must act up and parallel to the incline for the block to move down the incline at constant velocity?
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62. The block shown is pulled across the horizontal surface at a constant speed by the force shown. If M = 5.0 kg, F = 14 N and θ = 35°, what is the coefficient of kinetic friction between the block and the horizontal surface?
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63. A 2.0-kg block slides on a rough horizontal surface. A force (magnitude P = 4.0 N) acting parallel to the surface is applied to the block. The magnitude of the block’s acceleration is 1.2 m/s2. If P is increased to 5.0 N, determine the magnitude of the block’s acceleration.
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64. A 4.0-kg block is pushed up a 36° incline by a force of magnitude P applied parallel to the incline. When P is 31 N, it is observed that the block moves up the incline with a constant speed. What value of P would be required to lower the block down the incline at a constant speed?
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65. A 3.0-kg block slides on a rough horizontal surface. A force of 8.0 N acting parallel to the surface is applied to the block. The coefficient of kinetic friction between the block and the surface is 0.15. What is the magnitude of the block’s acceleration?
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66. In the figure shown, the coefficient of kinetic friction between the block and the incline is 0.29. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction in the pulley.
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67. In the figure shown, the coefficient of kinetic friction between the block and the incline is 0.40. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction in the pulley.
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68. The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s2. What is the magnitude of the friction force on the block that slides horizontally? Disregard any pulley mass or friction in the pulley and let M = 2.0 kg.
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69. Two blocks in contact with each other are pushed to the right across a rough horizontal surface by the two forces shown. If the coefficient of kinetic friction between each of the blocks and the surface is 0.30, determine the magnitude of the force exerted on the 2.0-kg block by the 3.0-kg block.
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70. Two blocks are accelerated across a horizontal frictionless surface as shown. Frictional forces keep the two blocks from sliding relative to each other, and the two move with the same acceleration. If F = 1.2 N and M = 1.0 kg, what is the horizontal component (frictional force) of the force of the large block on the small block?
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| 71. The coefficient of kinetic friction between the surface and the larger block is 0.25, and the coefficient of kinetic friction between the surface and the smaller block is 0.40. If F = 22 N and M = 1.0 kg in the figure, what is the magnitude of the acceleration of either block?
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72. In the figure, the coefficient of kinetic friction between the surface and the larger block is 0.20, and the coefficient of kinetic friction between the surface and the smaller block is 0.30. If F = 14 N and M = 1.0 kg, what is the magnitude of the acceleration of either block?
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73. Two blocks are accelerated across a horizontal frictionless surface as shown. Frictional forces keep the two blocks from sliding relative to each other, and the two move with the same acceleration. If F = 1.2 N and M = 1.0 kg, what is the horizontal component (frictional force) of the force of the small block on the large block?
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| 74. Two blocks connected by a string are pulled across a horizontal surface by a force applied to one of the blocks, as shown. The coefficient of kinetic friction between the blocks and the surface is 0.25. If each block has an acceleration of 2.0 m/s2 to the right, what is the magnitude F of the applied force?
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75. In the figure, the coefficient of kinetic friction between the surface and the larger block is 0.20, and the coefficient of kinetic friction between the surface and the smaller block is 0.30. If F = 10 N and M = 1.0 kg, what is the tension in the connecting string?
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76. A 60-kg person rides down an icy hill of 20° slope while standing on a 3.0-kg flat-bottomed bathroom scale. Assume there is no frictional force between the bottom of the scale and the hill. The static friction force the scale exerts on the person is
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77. A chair is placed on a rug. Then a book is placed on the chair. The floor exerts a normal force
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| 78. Two identical springs with spring constant 50 N/m support a 5.0-N weight as in the picture below. What is the tension in spring A?
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79. A book is placed on a chair. Then a videocassette is placed on the book. The floor exerts a normal force
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| 80. Two bodies, A and B, collide as shown in Figures I and II below.
Which statement is true?
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81. You throw a ball up in the air and hold your hand under it to catch it when it comes down. The reason why the ball stops is because
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82. You hold a tennis racket in your hand. On top of the racket you have balanced a ball. Which statement is true?
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83. In order to jump off the floor, the floor must exert a force on you
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84. When an acrobat hangs motionless from a pair of rings
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| 85. Three boxes slide on a frictionless horizontal surface when pulled by a force of magnitude F. When we compare the tensions and with the force F, we find that
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| 86. Three boxes are pushed across a frictionless horizontal surface as shown. When we compare the normal force that mass 2m exerts on mass 5m with the normal force that mass 5m exerts on mass 10m, we find that
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87. Given the equation , which answer or answers provide(s) the best description of a possible physical situation?
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88. Given the equation , which answer provides the best description of a possible physical situation?
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89. Two experiments are performed. In (A), an 18.0-N force pushes horizontally on a 2.00-kg block that then pushes on a 4.00-kg block. In (B), an 18.0-N force pushes on a 4.00-kg block that then pushes on a 2.00-kg block. Which statement is correct?
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90. A catcher arranges to catch a baseball dropped from a height 50 m above his glove. However, his friends substitute a soft 250 g red grapefruit, so that it will smash apart when he catches it. His glove stops the grapefruit in 0.010 s. What force does the glove exert on the grapefruit?
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| Exhibit 5-1
A 2.30-kg mass is suspended from the ceiling and a 1.70-kg mass is suspended from the 2.30-kg mass, as shown. The tensions in the strings are labeled and . Use this exhibit to answer the following question(s). |
91. Refer to Exhibit 5-1. A hand exerts an upward force of 6.70 N on the 1.70-kg mass. The magnitudes of the tensions are
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92. Refer to Exhibit 5-1. The string supporting the 1.70-kg mass is cut. The magnitudes of the tension in string 1 before and after string 2 is cut are
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| 93. A 6.00-kg block is placed on a 30.0° incline and connected to another block on a 36.87° incline. Although the surfaces are frictionless the blocks do not move. What is the mass in kilograms of the block on the 36.87° incline?
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| Exhibit 5-2
A 4.00-kg block is suspended from the roof of an elevator. A 2.00-kg block is suspended from the 4.00-kg block. The tensions in strings 1 and 2 are labeled and . Use this exhibit to answer the following question(s). |
94. Refer to Exhibit 5-2. When the elevator accelerates upwards with an acceleration of 2.20 m/s2, the magnitudes of and are
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95. Refer to Exhibit 5-2. When the elevator accelerates downwards with an acceleration of 2.20 m/s2, the magnitudes of and are
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96. Aline and Charlie are arguing as to whether or not it is possible in principle for an elevator to have an acceleration of magnitude greater than. In the course of their discussion they come up with the statements below. Which one is correct?
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97. Which type of force would be the equal and opposite force to a gravitational force?
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98. A book is resting on a table. How many forces would be in the free-body diagram of the book?
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99. Which of the following is not a fundamental force?
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100. An object on the flat bed of a truck that is accelerating along a straight horizontal road. The coefficient of static friction is 0.300 in this case. Of the following choices, which is the lowest value of acceleration that would result in the object sliding on the bed of the truck?
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101. A high-diver of mass 70.0 kg jumps off a board 10.0 m above the water. If, two seconds after entering the water, his downward motion is stopped, what average upward force did the water exert on him?
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102. A 2000-kg sailboat experiences an eastward force of 3000 N by the ocean tide and a wind force against its sails of magnitude 6000 N directed toward the northwest (45° N of W). What is the magnitude and direction of the resultant acceleration?
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103. A box is dropped onto a conveyor belt moving at 2 m/s. If the coefficient of friction between the box and the belt is 0.3, how long before the box moves without slipping?
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Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
