ch43-p052 - 52. (a) From E = NQ = (Msam/4mp)Q we get the...

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(d) This finding, that // dm dt dM dt > , is in large part due to the fact that, as the protons are consumed, their mass is mostly turned into alpha particles (helium), which remain in the Sun. (e) The time to lose 0.10% of its total mass is t M dM dt == × ×× 0 0010 0 0010 2 0 10 43 10 315 10 15 10 30 97 10 . .. af ch c hc h kg kg s s y y 52. (a) From E = NQ = ( M sam /4 m p ) Q we get the energy per kilogram of hydrogen consumed: E M Q m p sam MeV J MeV kg Jkg × × 4 26 2 160 10 4 167 10
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