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AP Physics 2/Unit 9 – Thermodynamics
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Entropy as a State Function
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A system is taken from state A to state B along path 1 and then returned to state A along path 2, completing a cycle. Which statement correctly describes the net change in the system’s entropy?

A

The entropy change is positive for the complete cycle

B

The entropy change depends on which path is more efficient

C

The entropy change is negative for the complete cycle

D

The net entropy change is zero regardless of path

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