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A basketball of mass 0.611 kg is droppedfrom rest from a height of 1.17 m. It rebounds to a height of 0.638m. (a) How much mechanical energy was lost duringthe collision with the floor? (b) A basket ballplayer dribbles the ball from a height of 1.17 m by exerting aconstant downward force on it for a distance of 0.126 m. Indribbling, the player compensates for the mechanical energy lost during each bounce. If the ball now returns to a height of 1.17 m,what is the magnitude of the force?
Two workers are trying to move a heavy crate. One pushes on the crate with a force , which has a magnitude of 485 newtons and is directed due west.
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 7.8x10-7 m and a maximum speed of 2.7x10-3 m/s. What is the maximum acceleration of the eardrum
A 48.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.44 102 m/s from the top of a cliff 152 m above level ground, How much work has been done on the projectile by air friction
A charged conducting sphere has a radius of 10.0 cm and is surrounded by an electric field. What is the potential at the center of sphere
A 4 kg block is acted upon by three horizontal forces. 10n (to left) 5n(short arrow to right) 25n to right. what is the net horizontal force acting on the block? what is the horizontal acceleration of the block?
A stamp collector is viewing a stamp with a magnifying glass held next to her eye. Her near point is 25 cm from her eye. What is the refractive power of a magnifying glass
an ice chest at a beach party contains 12 cans of soda at 4.50 degc. each can of soda has a mass of 0.35 kg and a
A disk rolls down a slope. It rotational axis is its center of mass. It is rotation at a constant angular speed making 42.0 full revolutions in a time interval of 4.50 s. What is the total kinetic energy of the rolling disk
A particle with a charge 3.2 x 10^-19 C is moving at a speed of 5x10^7 m/s that makes an angle of 40 degrees with respect to a uniform magnetic field B, Determine the magnetic field strength B
a computer monitor accelerates electrons and directs them to the screen in order to create an image. if the
A 10.00kg box on a smooth, frictionless, horizontal surface experiences a downward force of 30n at an angle of 40 degrees to the horizontal. The box moves 1.50 m to the right. What was the work done by gravity.
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 4.0 m/s. What is the volume flow rate through the pipe
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