(d) This finding, that //dm dtdM 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 tMdM dt==×××=×0 00100 0010 2 0 1043 10315 1015 10309710...afchchchkgkg ss yy52. (a) From E = NQ= (Msam/4mp)Qwe get the energy per kilogram of hydrogen consumed: EMQmpsamMeVJ MeVkgJkg××−−426 2160 104 167 10
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