Asked by Justin
Assume that a certain city consumes electrical energy at an average rate of 2.0× 10^9 W. What would be the mass change
in producing enough energy to keep this city running for 21 weeks?
in producing enough energy to keep this city running for 21 weeks?
Answers
Answered by
Damon
E = m c^2
so
m = E/c^2
E = 2*10^9 *21 * 7 *24 *3600 = 2.54*10^16
c = 3*10^8 m/s
c^2 = 9 * 10^16
so
m = 2.54 / 9 = .282 Kg = 282 grams
so
m = E/c^2
E = 2*10^9 *21 * 7 *24 *3600 = 2.54*10^16
c = 3*10^8 m/s
c^2 = 9 * 10^16
so
m = 2.54 / 9 = .282 Kg = 282 grams
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