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Why does a gas warm up when a piston is pushed in to compress it?
AMolecules lose energy to the walls
BMolecules rebound faster off the piston
CMolecules stick to the moving piston
DMolecules collide less with each other
Answer & Solution
Correct answer: B. Molecules rebound faster off the piston
A molecule striking an approaching piston bounces back with more speed, like a ball off a moving bat, so mean kinetic energy rises.
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