분류없음 - 2012/05/23 14:01
'2012/05/23'에 해당되는 글 1건
The total amount of energy in an isolated system remains constant over time. The total energy is said to be conserved over time. For an isolated system, this law means that energy can change its location within the system, and that it can change form within the system, for instance chemical energy can become kinetic energy, but that energy can be neither created nor destroyed.
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