Question

meaning and explanation of internal energy of a thermodynamical system with its mathematical expression. plz tell me the Ans​

Answer 1

The first law of thermodynamics states that the change in internal energy of a system equals the net heat transfer into the system minus the net work done by the system. In equation form, the first law of thermodynamics is ΔU = Q − W. Here ΔU is the change in internal energy U of the system.