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Q & A: m-> E conversion

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Most recent answer: 08/25/2009
Q:
I used E=mc2, and plugged in a microgram. Using 3*10^8 squared, I pulled out 5.16^-7 joules per kilogram. Is this correct? ..I'm curious as to know if I have the conversions correct.
- Steven (age 22)
Newport
A:
It's a little unclear if you're discussing a microgram or a kilogram. In the SI units , 1kg*(3*108 m/s)2= 9*1016Joules.
For a microgram, you'd get 10-9 as much, i.e. 9*107 J.

Mike W.

(published on 08/25/2009)

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