Exam-style question
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In a p-V diagram, what does a loop that moves clockwise indicate about the gas process?.
- A.The gas is absorbing heat
- B.The gas is doing work on the surroundings
- C.The gas is losing heat
- D.The gas is being compressed
Model answer
What a good answer should say
- The gas is doing work on the surroundings
Explanation
Why this works
A clockwise loop on a p-V diagram indicates that the gas is doing work on the surroundings, as it expands during the process. This means that energy is being transferred from the gas to the environment, which is a key aspect of understanding thermodynamic cycles and their efficiency.
Recognizing this behavior is essential for analyzing engine performance.
Common mistake
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