When heat transfers into a system, is the energy stored as

Problem 3CQ

When heat transfers into a system, is the energy stored as heat? Explain briefly.

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Step 1 of 2

We say that a thermal system has a certain internal energy: its internal energy is higher if the temperature is higher. If two objects at different temperatures are brought in contact with each other, energy is transferred from the hotter to the colder object until equilibrium is reached and the bodies reach thermal equilibrium (i.e., they are at the same temperature). No work is done by either object. The transfer of energy is caused by the temperature difference, and ceases once the temperatures are equal. Here the heat added is stored as thermal energy only. So If we simply warm the system to a higher temperature. Then, yes, the heat added is stored as heat - thermal energy.