Question

The Law of Conservation of Energy states:
A. Energy is efficient at 100% in all systems
B. Energy cannot be created nor destroyed
C. Energy can be created but it cannot be destroyed
D. None of the above

Answer 1

B

Answer 2

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