Work (6.1.4)

Question 1

What are the signs for energy, heat, or work entering or leaving a system?

Answer 1

• By convention, energy, heat, or work entering a system has a positive sign, while energy, heat, or work coming out of a system has a negative sign.

Question 2

What is PV work?

Answer 2

• PV work is work performed by a gas expanding or contracting.