Question

e=mc^2

Answer 1

albert einstien sayed that once!

Answer 2

Yes, it is the rest mass of a particle although the full equation is:
\[E^{2}=m^2c^4+p^2c^2\]
This refers to the total every of a massive particle and is referred to as the relativistic energy momentum relationship. What you have writen is know as the engery mass relations, but it only refers the mass of any particle AT REST!

Answer 3

somebody is smart....

Answer 4

As Astronomer2231 says \(E=mc^{2}\) refers only to the rest mass. The full equation is far more interesting than the shorter rest mass version, since with it, one can realise that there are negative solutions (because the square root of a number will give a positive and negative solution), which are the anti-matter solutions (which Paul Dirac predicted should exist to complete the symmetry of the equations)..

Answer 5

In addition to their statements, this is important as it is the foundation of nuclear energy. By releasing the binding energy of particles (via this equation) energy can be used to convert water into steam, and turn a generator.