What is a kinetic energy? 1.0J, 2.0J, 3.0J 2.0J The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following? solids and liquids A uniform pressure of 7.0 ×× 105 N/m2 is applied to all six sides of a copper cube.

What net torque must be applied to bring it to rest within 3 s? 4.5*10^-3, 3.5*10^-4, 2.9*10^-5 3.5*10^-4 A ventilation fan with a moment of inertia of 0.034 kg⋅⋅m2 has an angular speed of 12.0 rad/s. What is the moment of inertia of this system of masses about the x-axis? 160kgm, 144kgm, 129kgm 160kgm A disk has a moment of inertia of 3.0 ×× 10-4 kg⋅⋅m2 and rotates with an angular speed of 3.5 rad/s. What torque does the weight of water produce on the non-rotating cylinder? 12Mm, 13Nm, 11Nm 11Nm A 4.0-kg mass is placed at (3.0, 4.0) m, and a 6.0-kg mass is placed at (3.0 ××4.0) m. What centripetal acceleration does a passenger experience when the wheel's angular speed is 0.50 rad/s? 1.0m/s, 2.0m/s, 3.0m/s 3.0m/s A bucket filled with water has a mass of 23 kg and is attached to a rope, which in turn around a 0.05-m radius cylinder at the top of a well. If the maximum tension that the string can withstand is 450 N, then what maximum speed can the mass have if the string is not to break? 15m/s, 29m/s, 34m/s 29m/s The distance from the center of a Ferris wheel to a passenger seat is 12 m. What is the average tangential acceleration of a point on the wheel's edge? 0.45m/s^2, 0.56m/s^2, 0.39m/s^2 0.45m/s^2 A 0.40-kg mass, attached to the end of a 0.75-m string, is whirled around in a circular horizontal path.

What was the magnitude of the momentum of the combined mass immediately after the collision? 0.632, 0.459, 0.452 0.632kgm/s What is the angular speed about the rotational axis of the Earth for a person standing on the surface? 6.8*10^-6, 6.9*10^-5, 7.27*10^05 7.27*10^-5 A 0.15-m-radius grinding wheel starts at rest and develops an angular speed of 12.0 rad/s in 4.0 s. The combined mass swings up to a height of 0.08 m. If the diver's speed immediately after leaving the raft is 4 m/s, what is the corresponding raft speed? 1.3, 4.8, 0.6 0.6m/s A 0.005-kg bullet is fired into a 0.5-kg block of wood suspended as a ballistic pendulum. If the ball is in contact with the plate for 0.030 s, what is the magnitude of the average force that the ball exerts on the plate during impact? 90, 87, 84 87 N A 75-kg swimmer dives horizontally off a 500-kg raft.

The ball's speeds just before impact and after are 4.5 m/s and 4.2 m/s, respectively. What is the magnitude of change in the ball's momentum? 40, 20, 60 20kgm/s A crane drops a 0.30 kg steel ball onto a steel plate. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Jerome with a return speed of 60 m/s. What is the power dissipated by the waterfall? 588MW, 212MW, 564MW 588MW Jerome pitches a baseball of mass 0.20 kg. With what velocity does the water leave the ground? 32m/s, 28m/s, 16m/s 28m/s Water flows over a section of Niagara Falls at a rate of 1.20 ×× 106 kg/s and falls 50.0 m. Everest, 8 850 m high? 9.12, 8.67, 7.94 8.67MJ Old Faithful geyser in Yellowstone Park shoots water hourly to a height of 40 m. What is the frictional force in this situation? 78.2, 46.2, 56.7 46.2N What is the kinetic energy of a 0.135-kg baseball thrown at 40.0 m/s? 116J, 108J, 130J 108J What is the minimum amount of energy required for an 80-kg climber carrying a 20-kg pack to climb Mt.

6700N, 5900N, 8000N 8000N A 10.0-kg mass is placed on a 25.00 incline and friction keeps it from sliding. What net force acts on the cart? (g = 9.8 m/s2) 0.29, 0.92, 0.31 0.31N Find the tension in an elevator cable if the 1 000-kg elevator is descending with an acceleration of 1.8 m/s2, downward. If the two ropes are perpendicular to each other, what is the resultant acceleration of the object? 1.2, 2.2, 3.2 1.2,/s 2.04-kg cart is accelerated across a level surface at 0.15 m/s2. The first rope applies a force of 25 N and the second, 40 N. Two ropes are attached to a 40-kg object located in floor of room.

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