How can one define the internal energy of a system?

Oscar Serrano

Oscar Serrano

Answered question

2023-02-12

How can one define the internal energy of a system?

Answer & Explanation

lew3i0

lew3i0

Beginner2023-02-13Added 4 answers

Definition of Internal Energy:
A system's internal energy is the total of all of its energies, including its mechanical, chemical, potential, kinetic, and other energies.. Internal energy is denoted by the letter U, and joules are the unit of measurement (J).Internal Energy:
The total of the kinetic energy due to the motion of molecules and the potential energy associated with the vibrational motion and electric energy of atoms within molecules constitutes the internal energy of a system with some specific boundaries.The internal energy is a state function that is it only depends upon initial and final points.The internal energy is extensive quantity.For a closed system, the internal energy is essentially defined by ΔU=q+WΔU is the change in internal energy, q is the heat and W is the mechanical work done.

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