Here is a math question that i'm stuck on e=m*c^2 i know m is 649 and the c is 3 what is the answer?

isn't c 3 x 10^8?????


if c is 3 the answer is 649 x 3^2=5841


if c is 3 x 10^8, the answer is 5841x 10^19

Here is a math question that i'm stuck on e=m*c^2 i know m is 649 and the c is 3 what is the answer?
What units are you using? Normally, c = 3 x 10^9, if I remember correctly.





However, using the units you've shown, the energy e is





649 * 3 * 3 = 5,841





Using the value of c I suggested, the energy will be





5,841 x 10^18 = 5.841 x 10^21
Reply:e=m*c^2


e=649*3*3


e=649*9


e=5841
Reply:since e=mc*2


therefore e = 649 x 9


=5841