Internal Energy of a Body

Internal Energy of a body is the sum of all kinetic and potential energy of all molecules constituting the body.

if they do not have time to read and work on them. So far, at the moment, when I recommend someone to listen to something, people, as a rule, are in a hustle and bustle, they simply forget about it, or do not find the time. As a result, it is no longer possible to communicate with them on this or that topic, at the proper level. This is often frustrating. You feel like a reptile that has come ashore for the first time.