Homework Handout #5

5.01:  Verify that about 6 x 1014 g of hydrogen is converted to helium in our Sun every second.

5.02: (a) If a star more massive than the Sun is characterized by M = 2 x 1035 g and L = 4 x 1040 erg/s, how long can it shine at that luminosity if it is 100% hydrogen and converts all H to He?

(b) Do a similar calculation for a red dwarf star of mass 1033 g and luminosity 4 x 1032 erg/s.