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A 5-kg block is sent sliding across a frictionless table at a speedof 0.75 m/s. It strikes the free end of an ideal spring whose other end is attached to a wall. After the block has compressed the spring by 4.0 cm, its speed is half of what it was when it first encountered the spring. How much time elapses between the block's first and last contact with the spring?
A solid disk of radius 9.20cm and mass 1.15kg , which is rolling at a speed of 2.30m/s , begins rolling without slipping up a 12.0? slope
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 294 K, In the scenario described in the previous question, how much energy is transferred out of the outside air
The Bragg angle for a certain reflection from a powder specimen of copper is 47.75º at a temperature of 293 K and 46.60º at 1273 K. Find the coefficient of linear expansion of copper
An auto race is held on a circular track. A car completes onelap in a time of 21.5 seconds, with an average tangential speeed of38.1 m/s. What is the radius of the track
A small package rests on the horizontal dashboard of a car. If ?s = 0.340, what is the minimum acceleration of the car that will cause the package to slip off
A brass rod with a length of 1.40m and a cross-sectional area of 2.37cm2 is fastened end to end to a nickel rod with length L and cross-sectional area 0.720cm2, What is the strain in the nickel rod
What must the minimum muzzle velocity be for the shell to clear the top of the cliff?
A high diver leaves the end of a 5-m-high diving board, and strikes the water 1.3 s later, 3 m beyond the end of the board. determine the velocity with which she enters the water
A step-down transformer has a turns ratio of 1:10, and its primary is connected across the terminals of a standard 120-V wall socket. What power P is dissipated in the resistor
a bulb emits light uniformly in all directions. the average emitted power is 150w. at a distance of 5m from the bulb
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, and the radius of the orbit is 5.00 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellit..
Two ice skaters, Daniel (mass 70.0 ) and Rebecca (mass 45.0 ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the magnitude of Daniel's velocity after the collision
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