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Classical Mechanics Level 5

Three objects of same heat capacity with temperature \(T_1=200~\mbox{K}\), \(T_2=400~\mbox{K}\) and \(T_3=400~\mbox{K}\) exchange heat with each other. They are isolated from the rest of the universe. Find the highest possible temperature one of them can reach in kelvin.

Hint: The first and second laws of thermodynamics are your friend.

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