Hi, I'm new to the site and not sure if I'm posting in the right place as this is not exactly a homework problem, but just a problem in general. I'm looking at E=mc2 and how the units can be broken down into eV=u (I think?). I don't know what happens to the distance units, though, if we keep seconds as the time units. 1. The problem statement, all variables and given/known data What happens to the distance units when E=mc2 is converted from joules=(kg)(m/s)2 into eV=u? Where eV is electron volts and u is atomic mass units. 2. Relevant equations 1u= 1.66x10-27 kg 1eV=1.6x10-19 J c2=9.315x108 eV/u 3. Attempt at Solution I really don't know what to do here. Can it just stay meters? Any help is appreciated.