Answers

2015-04-07T20:35:16+05:30
The total energy of a system is internal energy
its known as mechanical nergyie pe+ke
molecules of a substance have various forms of energies like linear ke,rotational ke vibrational ke etc
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2015-04-07T20:35:59+05:30
Internal energy of a system is the energy present in the system.
Internal energy = potential energy + kinetic energy

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