Calculate the ratio of the energy generation rate for the pp-chain to the energy generation rate for the cno cycle given conditions characteristic of the center of the present-day (evolved) sun, namely t = 1.5696·10 7 k, rho = 1.527·10 5 kg/m 3 , x = 0.3397 and x cno = 0.0141. assume that the pp-chain screening factor (f pp ) and branching factor (ψ pp ) are both unity. explicitly state which fusion reaction dominates. for 5 points extra credit, calculate ε pp and ε cno using both the (more)