Question

What type of device is a car engine?

A.A heat pump that uses heat to do work
B.A heat engine that uses work to move heat
C.A heat pump that uses work to move heat
D.A heat engine that uses heat to do work

Answer 1

D. A heat engine that uses heat to do work

Explanation:

Combustion = Heat

Combustion is used to create motion (work)

Answer 2

A heat engine that uses work to move heat

hope this helps :)