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An aluminium object with a mass of 5.77 kg and at a temperature of 23.3 °C...

An aluminium object with a mass of 5.77 kg and at a temperature of 23.3 °C comes to thermal contact with a 9.26 kg copper object which is initially at a temperature of 97.7 °C. What is going to be the equilibrum temperature of the two objects? Neglect heat transfer between the objects and the environment. The specific heats are: cAl = 900 J/kg°C and cCu = 387 J/kg°C.

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