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Found in: Page 547

### College Physics (Urone)

Book edition 1st Edition
Author(s) Paul Peter Urone
Pages 1272 pages
ISBN 9781938168000

# How do heat transfer and internal energy differ? In particular, which can be stored as such in a system and which cannot?

Due to the temperature variance, heat transfer is a procedure where the heat energy is transmitted from one system to another system. Where as internal energy is the energy stored.

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## Internal energy is related to the kinetic and potential energy of the system.

· Internal energy is the energy stored.

· Internal energy for an ideal system is dependent only on the temperature of the system i.e. when the temperature increases energy also increases.

· The unit of internal energy is Joule (J)

Whereas in heat transfer

· The transmission of heat energy from one system to another system due to temperature difference is called as heat transfer.

· Variance in temperature leads to energy transmission from a hot body to a cold body.

· When the two systems reach at the same temperature, the system are said to be in thermal equilibrium.

· The unit of heat transfer is Joule.