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A rope is used to pull a 4.85 kg block at constant speed 5.02 m along a horizontal floor. The force on the block from the rope is 5.48 N and directed 24.1° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the block-floor system, and (c) the coefficient of kinetic friction between the block and floor

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