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e = mc^2
e = 50 * 300 000 m/s^2
e = 4500000000000 J = 4500000000 KJ = 4500000 MJ = 4500 GJ = 4.5 TJ
Always something [img]smile.gif[/img]
I have to comment on what you said Lioness.
Your total amount of energy ´wouldn't keep a bulb lit for that long time.
First, all the energy just don't keep a lightbulb lit. It is powered by electricity, but the electrons in you takes up a very small part of your mass. Less than 0.001 u I am sure.
And ofcourse, to be picky, the bulb would burn out after some time [img]smile.gif[/img]
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