Question

What happens to the energy put into a machine that does not get used to do useful work?

Answer 1

"Most gets converted to heat energy" is the one among the following choices given in the question that describes what happens to the energy put into a machine that does not get used to do useful work. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.

Answer 2

Answer:

B. most gets converted to heat energy

Explanation:

Let us take the example of a car. Though some formula one cars have 50% efficiency, the efficiency of an internal combustion car varies between 18–20%. Though some formula one cars have 50% efficiency This means that more than 80% of energy is not utilized hence it is wasted. Little energy does get converted to sound. But almost no energy changes to light.

So, most gets converted to heat energy.