What is internal energy?
To Explain: Internal energy.
Explanation of Solution
Introduction:
Total energy contained by matter is called internal energy due to the motion of molecules. This energy arises due to the potential and kinetic energy of molecules.
A system’s internal energy can be changed when heat is added or subtracted from the system or when work is done on the system.
Conclusion:
Thus, internal energy is total energy of a system which occurs due to kinetic and potential energy of constituent molecules.
Chapter 21 Solutions
Conceptual Physics: The High School Physics Program
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