E=MC squared

[Loosehead]

We all know the famous equation. Can anyone tell me what units of energy the E represents, I know that C is the speed of light in Metres per second and M is the mass in Kilograms but what unit is the E? Thanks

PS anyone know how to get a little 2 above the C! in the question title?!

[Sequin]

The standard unit of energy is the Joule, so I'd assume it would be that

[newtron]

If you know the units of the other two variables, then with a quick dimensional analysis, you could determine the units for the third.  For example:  mc^2 correlates to the units Kg m^2/s^2 = Kg m/s^2 (m) = N*m = joule.   

[kempie]

To type superscript two ( � ) hold down the Alt key and type 0178 on the number keypad.

Here is a list of ASCII keycodes... http://www.htmlcodetutorial.com/characterentities_famsupp_69.html

(n.b. using the Alt - numkeypad combination requires four digits to be entered so preface any keycodes shorter than four digits with zeroes)

[kempie]

... or use Character Map found in

Start → Accessories →System Tools

[jake-the-peg]

Aw I was going to write thanks a 10 to the power 6 but it only works for superscript 2 and 3

thanks a 10�x10� anyway

[Loosehead]

Thanks everyone, I'm enlightened!

[dosset]

read  E=MCsquared  " A biography of the world's most famous equation" by David Bodanis