Britney Parsons

Physics

28 October, 09:04

Whic ones are true and false?

a. The internal energy of a system decreases when work is done on the surroundings.

b. The internal energy of a system increases if heat flows from the surroundings to the system.

c. The internal energy of a closed system is constant.

d. The internal energy of an isolated system can be changed by heat flowing into or out of the system.