Question

If e=10,m=123then use e=mc^2

Answer 1

e = mc^2
10 = 123 * (3*10^8)^2
10 = 123 * 9 * 10^16

WTF!!!???

Answer 2

The equation — E = mc2 — means "energy equals mass times the speed of light squared." It shows that energy (E) and mass (m) are interchangeable; they are different forms of the same thing.