Physics · Statistical Mechanics and Thermal Physics
If two systems A and A' with initial energies Ei and E'i respectively are placed in thermal contact and reach thermal equilibrium with final mean energies Ef and E'f, then the heat exchange Q and Q' between them satisfies which of the following relations?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Q' + Q = 0✓
- 2Q' + Q > 0
- 3Q - Q' = 0
- 4Q' - Q = 0
Correct answer
Q' + Q = 0
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