A closed system is taken through three processes that form a complete cycle

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics

Problem

A closed system is taken through three processes that form a complete cycle. • Process 1→2: the gas receives

Q_{12}=+800\,\text{J}

of energy by heating and

W_{12}=+150\,\text{J}

of work is done ON the gas. • Process 2→3: adiabatic, with

W_{23}=-300\,\text{J}

(i.e., the gas does

300\,\text{J}

of work on the surroundings). • Process 3→1: constant volume. Determine the energy

Q_{31}

transferred as heating during process 3→1.