Recent content by accalternata

I derived the equation for P so I substituted that into this equation. I'm struggling with finding rho_c (central density) and rho. Am I supposed to use the average density for rho (can calculate this since I know the radius of Sun and mass)? That still leaves the problem with the central...

I need help with d) and e). Currently how I've approached it is by using the fact that e=mc^2 and I can correlate this emission of light with loss of mass. Then I can use the formulas in a) to correlate this with da/dt. I'm struggling to figure out what the rate of energy loss is though.