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When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false
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An artificial satellite circles the earth in a circular orbit at a location where the acceleration due to gravity is 6.03 m/s^2. determine the orbital period of the satellite.
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The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Engine 1 has an efficiency of 0.13 and requires 7200 j of input heat to perform a certain amount of...
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