Physics
Physics
Problem
(a) State the First Law of Thermodynamics for a closed system. (b) Out of , and , name the quantity that is a state function.Intuitive explanation
The First Law connects energy conservation to heat and work—it tells you that the internal energy of a closed system changes only when energy crosses its boundary. For part (b), you need to recognize that while heat and work depend on the path a system takes, one of these quantities is path-independent and depends only on the initial and final states: that's what makes something a state function.
Intuitive explanation
The First Law connects energy conservation to heat and work—it tells you that the internal energy of a closed system changes only when energy crosses its boundary. For part (b), you need to recognize that while heat and work depend on the path a system takes, one of these quantities is path-independent and depends only on the initial and final states: that's what makes something a state function.