Question

According to the _____ law of thermodynamics, energy is never 100% efficient because _____.

Answer 1

According to the Second law of thermodynamics, energy is never 100% efficient because some of the energy disperses as heat

Answer 2

Second; entropy in an isolated system is always increasing.

Step-by-step explanation:

• Entropy is the measure of energy that cannot do work.

• Energy cannot be 100% efficient because when energy is converted from one form to the other eg: mechanical energy to heat some of the energy is 'converted' to entropy which cannot be used in the system.

• Some energy will be lost in the form of entropy