Homework 2

Due: 2017/10/16

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6. 5.13
7. 7.9
8. 8.15
9. 10.2
10. 10.3
11. 10.4
12. Estimate the ratio of radiation pressure to gas pressure in the core of the Sun. Assume that the Sun has central temperature T = 15.5 million K, central density ρ = 150 g cm^-3, and composition 90 % hydrogen and 10 % helium by number.
13. Using dimensional arguments, estimate the mass, M_*, of the Main Sequence star for which gas pressure and radiation pressure are equal in the star's core.

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