A 20-n block lifted straight upward by a hand applying a
A 20-N block lifted straight upward by a hand applying a force of 20N has an initial kinetic energy of 16J. If the block is lifted 1 m, how much work does the hand do? What is the block's final kinetic energy?
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A 20-N block lifted straight upward by a hand applying a force of 20N has an initial kinetic energy of 16J. What is the block's final kinetic energy
(a) How much total energy is storedin battery (b) If the head lights are left on overnight (8h),how much energy will still be stored in the battery in the morning(Assume a 150 w total power rating for both head lights together)
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