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To help keep his barn warm …

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To help keep his barn warm on cold days, a farmer stores 802 kg of solar-heated water (Lf = 3.35E+5 J/kg) in barrels. For how many hours would a 2.19 kW electric space heater have to operate to provide the same amount of heat as the water does, when it cools from 13.7 to 00C and completely freezes?

Posted by Dipank Deka 7 years, 3 months ago

CBSE > Class 12 > Physics

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