Question

how do you tell that total energy of system is called internal energy of system​

Answer 1

The internal energy of such a system is equal to the sum total of all the kinetic energies and potential energies of all the particles inside it. Kinetic energy is movement energy, and potential energy is position or separation energy. Temperature is a measure of the kinetic or movement energy of the particles.

Answer 2

Answer:

The internal energy of such a system is equal to the sum total of all the kinetic energies and potential energies of all the particles inside it. Kinetic energy is movement energy, and potential energy is position or separation energy. Temperature is a measure of the kinetic or movement energy of the particles