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Energy
is the capacity to do work.
There are two famous laws governing energy:
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Energy
is always conserved and
-
Energy
always goes from more useful forms to less useful forms.
The
amount of energy available for use after each conversion to
another form is always less than the original form. The rest,
usually heat or noise are dispersed into the atmosphere. This
is because the fundamental principle of the Law of Energy
is that it can not be created nor destroyed.
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