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Energy

 energy is that the quantitative property that has to be transferred to associate degree object so as to perform work on, or to heat, the object.[note 1] Energy could be a preserved quantity; the law of conservation of energy states that energy are often regenerate in type, however not created or destroyed. The SI unit of energy is that the joule, that is that the energy transferred to associate degree object by the work of moving it a distance of one metre against a force of one newton.

Common sorts of energy embody the K.E. of a moving object, the mechanical energy keep by associate degree object's position in an exceedingly field of force (gravitational, electrical or magnetic), the elastic potential energy keep by stretching solid objects, the energy free once a fuel burns,

Relevant Topics in Engineering