LAS 2 Heat Engine

(1) ________ is a device that changes thermal energy into mechanical
work. It absorbs heat from a (2) _______________. Then, it uses some of the heat energy
to produce (3) ________________. The remaining heat energy is discarded into the (4)
_________________.
The work done by a heat engine is the difference between the heat absorbed
from the hot reservoir and the heat discharged to the cold reservoir. The ratio of the
work done by the engine and the heat absorbed from the hot reservoir is the heat
engine (5) _________________.