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Example of Law of Conservation of Energy

The law of conservation of energy states that energy cannot be lost, but is transformed into other states by actions, in which the total sum of energy remains, either in new types of energy, or mass. (Some versions of the law also state that it cannot be created, but that theory is subject to criticism on the basis of synergistic events.)

Examples of Conservation of Energy:

When oxidized, chemical fuels are converted into a combination of both heat and matter. The total energy, less the external oxidization energy, equals the released energy potential, plus the latent energy in the residual mass.

Image Example of Conservation of Energy:

Joule's apparatus for measuring the mechanical equivalent of heat. A descending weight attached to a string causes a paddle immersed in water to rotate.