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I don't know what situation you are thinking of. The use of energy does correspond to doing work. You may be thinking of sitting quietly in a chair reading, not using any energy yourself (apart from your own internal metabolism), whilst your heating system keeps you warm. It may seem that no work is being done, but in fact your surroundings are losing heat continuously to the external of your house. That flow of heat is equivalent to mechanical or electrical energy through the relation 1 calorie = 1 Joule, or 1 BTU = 1055 Joules if you like BTU's. So even if mechanical work is not apparent, your use of heating BTU's is in effect doing work.

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16y ago

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