When energy is conserved or transferred, some energy becomes unavailable to do useful work. What happened to the unavailable energy?
Responses
It is completely destroyed.
It is completely destroyed.
It is given off as microwaves.
It is given off as microwaves.
It is conducted.
It is conducted.
It is given off as heat.
It is given off as heat.
The correct answer is: it is given off as heat.
When energy is conserved or transferred, some of it becomes unavailable to do useful work. This unavailable energy is typically given off as heat. Heat is the form of energy associated with the random motion of particles, such as atoms and molecules. When energy is transferred or transformed, some of it is inevitably converted into heat due to the inherent inefficiencies in any process. This heat energy cannot be easily converted back into a usable form of energy and is often lost to the surrounding environment. So, in most cases, the unavailable energy is released as heat.