p3trang20
p3trang20
07-11-2016
Chemistry
contestada
why no machine is 100 efficiency?
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sparklyRoadk1ll
sparklyRoadk1ll
07-11-2016
Because machines cannot be perfect. They are man-made, and mankind makes mistakes.
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Thompson12
Thompson12
07-11-2016
Energy can always be lost in the form of heat through friction.
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