The US uses about 8 x 1019 J of energy per year. How much mass would that require if we could totally convert mass to energy? If the mass came from, say, turning used cars entirely into energy, estimate how many would be required?
The US uses about 8 x 1019 J of energy per year. How much mass would that require if we could totally convert mass to energy? If the mass came from, say, turning used cars entirely into energy, estimate how many would be required?
Homework Answers
Energy and Mass are related by,
E = m*c^2
8 * 10^19 = m * (3.0*10^8)^2
m = 888.9 Kg
The average car of mass is around 1000 Kg
So 1 car would do !!
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The US uses about 8 x 1019 J of energy per year. How much mass would that require if we could totally convert mass to energy? If the mass came from, say, turning used cars entirely into energy, estimate how many would be required?
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