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Science & Mathematics by Anonymous 2018-06-19 21:33:10
Social Science
Aren't we creating Energy from an electric motor that receive a horse power for one hour of work produced?
4 answers
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Anonymous
No. We cannot create energy. It already exists. An electric motor needs electricity to work. Nothing is created by plugging a cord into the wall.
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Anonymous
We are TRANSFORMING energy not creating it. We take a kw hr of electrical energy and with a good motor we might get 70% of that as work done. The other 30% is lost as heat. So rather than creating energy we are LOSING useful energy.
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Anonymous
If an electric motor uses 745.7 watt-hours of electric energy, then it could produce one horsepower for an hour. No energy is created, it is just transformed from electric form into mechanical form.
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Anonymous
Can you rephrase? I have no idea what your asking