Energy can not be created or destroyed it can only be transferred from one from to another - nrgy cn nt b crtd r dstryd t cn nly b trnsfrrd frm n frm t nthr, Efficiency is the percentage of the energy transferred that goes to do something useful - ffcncy s th prcntg f th nrgy trnsfrrd tht gs t d smthng sfl, Energy is measured in joules - nrgy s msrd n jls, Energy is the ability to do work - nrgy s th blty t d wrk,

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