1. The problem statement, all variables and given/known data Calculate the energy generation coefficient ε (J s^-s kg^-1) in the center of a 50 Solar mass Main Sequence star, assuming that all luminosity is generated in a constant density core containing one tenth of the total mass of the star. 2. Relevant equations L=M^3.3 3. The attempt at a solution I was thinking ε=L/dm where dm is equal to 2m(e). I don't have a solution but I would like to know if I'm on the right track.