To remove 800j of heat the compressor in the fridge does 500j of work. how much heat is released into the room?

Heat released into the room = 1300 J

Explanation:

CONCEPT:

According to second law of thermodynamics , heat cannot flow from a lower temperature to a higher temperature.But the refrigerator transfers heat from lower to higher temperature .For this , we have to do work on the refrigerator.

This work is used to transfer heat from lower to higher temperature.

Heat released into the room = Heat removed + work done

Heat released into the room  = 800 +500

Heat released into the room  = 1300 J

that would be because of both gravity and friction. so     c

e/c, where e is its total energy