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/sci/ - Science & Math

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4644228 No.4644228 [Reply] [Original]

Hey /sci/,

I'm making a very basic lesson on fission and fusion for a physics class. I understand most of the concepts, but when making some practice problems I ran into a problem.
So my question is this:

What units are each part of the E=mc^2 equation in?

Say I'm trying to figure out the amount of matter destroyed to create a certain amount of energy. Would the units be joules, grams, and m/s, respectively?

>> No.4644231

kg

>> No.4644237
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4644237

>>What units are each part of the E=mc^2 equation in?

whatever you want them to be, as long as you are consistent.

>> No.4644238

>>4644228
E = energy (kg m^2 / s^2)
m = mass (kg)
c = speed of light (m / s)

metric

>> No.4644241

It doesn't matter as long as you're consistent with the units.

>> No.4644248

>>4644238
So if I use Joules for E, then my value for mass will be in kilograms and speed of light will be in M/S?

>> No.4644258

>>4644248
yes

>> No.4644259

>>4644258
Awesome.

Thanks. You guys are pretty helpful. I should come here more often.