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Two objects, with different sizes, masses, and temperatures, are placed in thermal contact. Energy travels (a) from the large
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Option (c) is correct

(c) from the object at higher temperature to the object at lower temperature.

The temperature is the property that describes the energy transfer between two object when they are in thermal contact.

Two object are not in thermal equilibrium if they have different temperature and there will be transfer of energy if they are in thermal contact.

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