The protonproton cycle consumes four protons while producing 27 MeV of energy. (a) At
Chapter 38, Problem 71(choose chapter or problem)
The protonproton cycle consumes four protons while producing 27 MeV of energy. (a) At what rate must the Sun consume protons to produce its power output of 4*1026 W? (b) The present phase of the Suns life will end when it has consumed about 10% of its original protons. Estimate how long this phase will last, assuming the Suns 2*1030@kg mass was initially 71% hydrogen
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