For which function is a heat engine most likely used?
a) starting an air conditioner
b) running a car
c) igniting a furnace
d) activating a thermostat

A heat engine is mostly used by running a car. It is a device that converts the pressure produced by the ignition of the fuel to generate a movement in the pistons and cylinders to eventually run a car by momentum energy. Using an heat engine in an air conditioner will pollute the room with carbon dioxide produced.

B

Explanation: it is used by running a car because u use the car the most

The steel ball

Explanation:

If it weighs heavier it will go down faster than something that weighs less