what does the law of conservation of energy state?

Question

conservation of energy

Answer 1

First law of thermodynamics- energy can neither be created or destroyed it can only be changed from one form to another. When one form of energy is converted to another form in a physical or chemical change, energy input always equals energy output

Second law of thermodynamics - When energy is converted from one form to another, some of the useful energy is always degraded to lower quality, less useful energy (usually heat)

Answer 2

States that energy can neither be created nor destroyed. Energy is transformed from one form to another, or transferred from one body to another.

Answer 3

1- Energy can not be created or destroyed. (conservation of energy)
2- Matter can not be created or destroyed. (conservation of matter).
3- Energy can be transformed into matter and vice versa.

Answer 4

You have the formal definitions above, here is another:
Law conservation of energy can be stated as: "What you gain at the swing, you lose at the roundabout." Or alternatively "there is no free lunch." I hope this was helpful.

Answer 5

it states that the energy lost or gained in a system is equal to the energy gained or lost (respectively) in the environment

it means that energy can neither be created or destroyed

Answer 6

Energy is not created nor destroyed. It is converted from one form to another.