Two identical thermodynamic systems, one at T1 and the other at T2, are placed in thermal contact. When they reach thermal equilibrium, what is true about the final temperature?
1.Tfinal > ½(T1 + T2)
2.Tfinal = ½(T1 + T2)
3.Tfinal < ½(T1 + T2)
4.Not enough information
2
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