What is meant by the internal energy of a body?
Difficulty: Easy
Internal energy:
The sum of kinetic energy and potential energy associated with the atoms, molecules, and particles of a body is called internal energy.
The internal energy of a body depends on many factors such as the mass of the body, kinetic and potential energy of molecules, etc.
$\triangle U$ = Q – W
Where: $\triangle U$ = internal energy, Q = Heat and W = work done
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