We set the potential energy in the particle in the box equal to zero and justified it by saying that there is no absolute scale for potential energy. Is this also true for kinetic energy?

As a particle in a one dimensional box moves back and forth between the two walls, the average momentum is zero and thus , the kinetic energy is zero.

Explanation:

Kinetic energy is express as

E(kinetic) =

As a particle in a one dimensional box moves back and forth between the two walls, the average momentum is zero and thus , the kinetic energy is zero.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

they are all solids.