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Delzac
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Homework Statement
The annual energy requirement of the USA is of the order [tex]10^20[/tex] J. If we could find a 100% efficient process that could change matter into energy, how many kilograms of material would be needed to meet this requirement?
Homework Equations
[tex]E = mc^2[/tex]
The Attempt at a Solution
Well, i simply sub [tex]10^2^0[/tex] into [tex]E = mc^2[/tex]
And i obtain, [tex]\frac{10^2^0}{(3.0*10^8)^2}[/tex]
then [tex]m=11,111.1111[/tex]
Is this correct? It looks to me like too simple a question, since this is the last question of my tutorial.
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