Body A is in thermal equilibrium with body C, and body B is also in thermal equilibrium with C. What can be concluded about A and B?
Correct answer C. A and B are in thermal equilibrium with each other
Explanation
This is the zeroth law of thermodynamics. If two bodies are each in equilibrium with a third, they are at the same temperature and so are in equilibrium with each other. It underlies the use of thermometers.
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