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On a winter day temperature of the tap w...

On a winter day temperature of the tap water is `20^(@)C` where as the room temperature is `5^(@)C` water is stored in a tank of capacity `0.5 m^(3)` for household use .If it were possible to use the beat liberated by the water to lift a `10kg` mass vertically , how high can it be lifted as the water comes to the room temperature ? Take `g = 10ms^(-2)`

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