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Q. A hot (70 C) lump of metal has a mass of 250 gm and a specific heat of .25 cal/gm-C. John drops the metal into a 500 gm calorimeter (specific heat of .10 cal/gm-C) containing 75 g of water at 20 C. Once they reach equilibrium, what will be the final temperature?

Q. The loaded cab of an elevator has a mass of 3*10^3 kg and moves 202 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab?

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