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A copper calorimeter of mass m(1)=1kg co...

A copper calorimeter of mass `m_(1)=1kg` contained with water of mass `m_(2)=1kg` their common temperature `t=10^(@)C` now a piece of ice of mass `m_(3)=2kg` and temperature is `-11^(@)C` dropped into the calorimeter neglicting any heat loss, the final temperature of system is (specific heat of copper `=0.1Kcal//Kg^(@)C` specific heat of water `=1Kcal//kg^(@)C` specific heat of ice `=0.5Kcal//kg^(@)C` latent heat of fusion of `ice=78.7Kcal//kg`]

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