KWh to g/year?

  • #1
PhysicFailure
7
0
A typical home uses approximately 1600 kWh of energy per month.If the energy came from a nuclear reaction, what mass would have to be converted to energy per year to meet the energy needs of the home? (in g/year)

I don't know how to do this problem :S
 

Answers and Replies

  • #2
the things you need to know to solve the problem are:

a watt has units: J/s

E(in joules) [tex]= mc^{2}[/tex] <---this is the equation you should use to calculate how much mass is required to be converted.

[tex]c = 2.9979 x 10^{8}[/tex]m/s <---speed of light.
 
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