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To help keep his barn warm on cold days, a farmer stores 846 kg of solar-heated water (L = 3.35E+5 J/kg) in barrels. For how

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To help keep his barn warm on cold days, a farmer stores 846 kg of solar-heated water (L = 3.35E+5 J/kg) in barrels. For how many hours would a 1.92 kW electric space heater have to operate to provide the same amount of heat as the water does, when it cools from 13.9 to OC and completely freezes

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