In a process, a system loses 125 J of heat when 400 J of work was done on the system. Calculate the change in internal energy.

In a process, a system loses 125 J of heat when 400 J of work was done

1.	In a process, a system loses 125 J of heat when 400 J of work was done on the system. Calculate the change in internal energy.
Answer» SOLUTION :`Q = - 125J, W = +400` `:. DELTAE= -125 + 400 = +275 J`.