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Nice example !

2,000 KWh per month = 2,000 x 12 = 24,000 KWh per year = 24,000 x 3,600 = 86,400,000 KW-sec per year

= 86,400,000,000 joules per year

E = m c2

m = E / c2 = 8.64 x 1010 / (3 x 108)2 = (8.64 / 9) x 10-6 =

9.6 x 10-7kilogram

0.00096 gram

Still incredible !

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15y ago

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