Consider an electric refrigerator located in a room. Determine the direction of the work a...

Consider an electric refrigerator located in a room. Determine the direction of the work and heat interactions (in or out) when the following are taken as the system: (a) the contents of the refrigerator, (b) all parts of the refrigerator including the contents, and (c) everything contained within the room during a winter day.

© PhotoDisc/Punchstock