Question

Select the correct answer.

How does the law of conservation of energy apply to machines?
A.
Machines create energy from scratch.
B.
Machines consume energy until no energy remains.
C.
Energy transferred to a machine equals energy transferred from it.
D.
Engineers break the law of conservation of energy by using machines.

Answer 1

Energy transferred into a machine equals energy transferred out of it (including waste heat generated by friction). (C)

Answer 2

Heya!!!


Answer to your question:
C.
Energy transferred to a machine equals energy transferred from it.

Law of conservation of energy states that total energy of an isolated system remains constant
Energy can neither be created nor be destroyed. Machine follows the same rule.

Hope it helps ^_^