Exam-style question
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Define expansion work and compression work in thermodynamics.
Model answer
What a good answer should say
- Expansion work is the work done by a gas when it expands against an external pressure, resulting in an increase in volume.
- Compression work is the work done on a gas when it is compressed, resulting in a decrease in volume.
Explanation
Why this works
This answer is strong because it clearly defines both concepts and highlights the key difference in their processes. It tests the understanding of work done in thermodynamic systems, which is crucial for analyzing energy transfers.
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