505549788039459922500
How do you say that number? I took my weight (75kg), multiplied it by C (299,792,458 Meters/s) and then squared it. I guess the resulting number would be how many Joules I have? Someone will probably come along and tell me how wrong I am (which would be useful info so shoot) but I’m also curious as to what you would even call that whopping 21-digit number.
505,549,788,039,459,922,500
I’m not a hundred percent sure of what comes after quintillion, but I think it’s septillion. So that number is:
505 septillion, 549 quintillion, 788 quadrillion, 39 billion, 459 million, 922 thousand 500.
It’s sextillion, I believe.
quintillion
sextillion
septillion
octillion
nonillion
decillion
actually, you missed trillion, so the number would thus be:
505 quintillion,549 quadrillion,788 trillion,39 billion,459 million,922 thousand,500
The equation is E=m(c[sup]2[/sup]) not E=(mc)[sup]2[/sup]. The energy corresponding to 75 kg is about 6.74 × 10[sup]18[/sup] or 6.74 quintillion* joules or 6.74 exajoules (EJ).
*American usage. Billion, trillion, quadrillion, quintillion, etc., ought to be avoided because they can mean something else in the UK.
I knew I’d mess something up somewhere, thanks everyone. So when all is said and done I have roughly 6.74 exajoules of energy? Is that right? Pretty neat.
Well, it ain’t even close to being a googol. 
To put that in perspective, the entire United States consumes around 8 1/2 EJ each month.
So if Cisco wants to power the USA he’d better start eatin’.
Or we could all chip in to help him provide the country’s energy. That way each person would only have to convert part of their bodies to energy. I am sure we could all do with sacrificing a pound or two of these frail earthly bodies a la The Merchant of Venice. So the solution to our country’s energy problem is to simply:
[list=1]
[li]Invent a method of converting human flesh to energy[/li][li]Pass a law requiring each US citizen to contribute part of their bodies to an energy bank(we could have a rotation, where everyone just contributes some every few years)[/li][li]Start choppin![/li][/list=1]
Seems pretty simple; I wonder why no one ever thought of it before?
On second thought, why make the citizenry pay for it? Let’s just use insurance salesmen and lawers (“First thing we do, let’s get rid of all the lawyers”-Shakespeare) for our fuel!
Wasn’t this one of the concepts of ‘The Matrix’?
No. That movie implied that human “bioenergy” could somehow be used as a power supply. They weren’t converting human mass into energy; rather they were using the energy provided by life itself. (Of course, the “expended” humans were converted into nutrients to feed the other humans, but they were not converted to pure energy.) This is blatantly bad science. The only “bioenergy” I can think of that would be available for harvest would be the heat generated by the human body (in fact, I think Morpheus at one point says something about how the human body produces such-and-such BTUs), but that would not be practical due to the Second Law of Thermodynamics: it would require more energy to get the humans to generate the heat than could be captured from their expendature thereof. In other words, it’d be like trying to get useful energy from the heat generated by a car engine: sure you can do it (use it to boil water, or something), but the energy in the gas you had to put in the tank would be more than the heat you got out.
If you’re going to convert matter to energy, it’d be easier, simpler, and more efficient to use high entropy matter such as dirt or seawater or air, rather than low entropy material like human tissue that is difficult to make and less than plentiful. Why use people when dirt is so cheap?
-b
SirRay wrote
No, there were only three concepts in the Matrix:
So if we found a way to harness the energy in a Cisco-size piece of matter, we could power the US for a good couple of weeks. Is there any way we might ever possibly be able to do that?
Sure. You just need to find a source of antimatter that’s cheap enough to make it cost-effective. 
-b
Of course not. this is a google.
A tad harsh I feel
Very harsh. Can we get back to the topic? Can you explain the antimatter thing a bit more?
What bryanmcc was referring to is the fact that if you take matter and an equal amount of antimatter and smooxh them together you convert all the mass into energy (E=mc^2 -wise). This is about the only way to get it all to convert to energy. Less sophisticated processes like nuclear fusion and fission convert only a tiny amount of the mass involved into matter. The difficulty is getting the anti-matter. It doesn’t hang around long, for reasons which should be obvious, in regions where there’s lots of normal matter. Is there somewhere out in space that we could “mine” for antimatter? Astronomers say no: we could tell if there were, because stray bits of normal matter would drift into it, emitting tell-tale gamma rays (like light only with higher energy).