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Calculate the change in potential energy of a 92.8 kg man when he takes an elevator from the first floor to 29th floor, if the distance between floors is 4.41 m.
A machine shop grinding wheel accelerates from rest with a constant angular acceleration of 2.3 rad/s^2 for 7.1 s, Find the total number of revolutions turned
q1. if a power source provides 54 watts of power to operate a machine that draws 4.5 amps of current when in use what
A submarine is 302 m horizontally out from the shore and 132 m beneath the surface of the water. What is the height of the building
When the Earth, Moon, and Sun form a right triangle, with the Moon located at the right angle, as shown in the figure , the Moon is inits third-quarter phase.
A sled is dragged along a horizontal path at a constant speed of v = 1.52 m/s by a rope that is inclined at an angle of ? = 30.3° with respect to the horizontal
a what is the direction of the force that you exert on the coin during the toss but before the coin leaves your hand?b
Water is drawn from a well in a bucket tied to the end of a rope whose other end wraps around a solid cylinder of mass 50 kg and diameter 25 cm. what is the angular acceleration of the 50-kg cylinder
The sound level of a single vacuum cleaner is about 75dB and a television is about 55dB. What is the sound level number
A plane flies at 1.25 times the speed of sound. The sonic boom reaches a man on the ground exactly 1 min after the plane passed directly overhead. What is the altitude of the plane
A 0.45 caliber bullet (m = 10.7 g) is fired into a large block of wood (M = 0.750 kg) so that the bullet becomes lodged in the block. What is the speed of the block after the collision
A projectile of mass 350-g is accelerated from rest at 8.25 m/s2 for 3.5s. Calculate how fast the ball and embedded projectile are after the collision
An air column in a glass tube is open at one end and closed at the other by a movable piston. The air in the tube is warmed above room temperature, and a 356 Hz tuning fork is held at the open end. Resonance is heard when the piston is at a distan..
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