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OpenStudy (anonymous):
The total U.S. consumption of electricity in a particular year was 5.0 x 1012 kilowatt-hours. What is the mass equivalence of this amount of energy?
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OpenStudy (anonymous):
@aryandecoolest
OpenStudy (anonymous):
You probably mean 5.0 x 10^12 kilowatt-hours. You need to convert this into joules. Then you need to set that equal to m*c^2, also in units of joule and then you will find the mass in kg.
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