Question

In physics the mass energy equivalence is that the mass of a body is measured by its energy content. This may be written algebraically as E=mc2, where E is energy, m is mass, and c is the speed of light in a vacuum. Transform the equation so that it will be read as a solution for mass, m. Show all the steps.

Answer 1

m = E / c²
For elementary particles, mass is often stated as their energy equivalent. For example, the mass of an electron is 9.11 x 10^-31 which is a rather clumsy way of expressing mass. It is easier to express this as 511,040 electron volts/c² (which is usually stated as 511,040 electron volts).

Here's a calculator that converts energy into mass: (and it has some information about the m=E/c² equation).
http://www.1728.org/einstn.htm