Question

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

A. most gets converted to light energy
B. most gets converted to heat energy
C. most gets converted to sound energy
What happens to the energy put into a machine that does not get used to do useful work?
A. most gets converted to light energy
B. most gets converted to heat energy
C. most gets converted to sound energy

Answer 1

B. most gets converted to heat energy

Step-by-step 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.

Answer 2

"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.