An ideally efficient heater adds 1100 J of heat to a warm room. How much work does it perform if it removes 1400 J of energy from the outdoors?
A) 2800 J
B) 300 J
C) 400 J
D) 0 - this can't be done.

Question

Quizplus · Accepted Answer

The work done by the heater is the difference between the energy removed from the outdoors and the heat added to the room: 1400 J - 1100 J = 300 J.

An Ideally Efficient Heater Adds 1100 J of Heat to a Warm