To save on heating costs, the owner of a greenhouse keeps
Chapter , Problem 40(choose chapter or problem)
To save on heating costs, the owner of a greenhouse keeps 660 kg of water around in barrels. During a winter day, the water is heated by the sun to 10.0 8C. During the night the water freezes into ice at 0.0 8C in nine hours. What is the minimum ampere rating of an electric heating system (240 V) that would provide the same heating eff ect as the water does?
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