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Heat Flow - Coupled systems and reversal of processes

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Each of two bodies has a heat capacity given, in the temperature range of interest, by
C = A + BT
• Where A = 8.0 J/K and B = 0.02 J/K2.
If the two bodies are initially at temperatures: T10 = 400.0 K and T20 = 200.0 K, and if they are brought into thermal contact, what is the final temperature and what is the change in entropy?

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The solution examines heat flow. The coupled systems and reversal of processes are analyzed.

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The change in heat is given by:

Where m is the object's mass, c is the object's heat capacity and T is the instantaneous temperature.
Thus, when the object moves from initial temperature Ti to final ...

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