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Q. A 58 kg woman stands on a very light, rigid board that rests on a bathroom scale at each end. What is the reading on each of the scales?

Q. A worker pushes a 34 kg block 13 m along a level floor at constant speed with a force directed 38° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.19, what were (a) the work done by the worker's force and (b) the increase in thermal energy of the block-floor system?

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