The hot glowing surfaces of stars emit energy in the form of electromagnetic rad

Question

The hot glowing surfaces of stars emit energy in the form of electromagnetic radiation. It is a good approximation to assume e=1 for these surfaces. a) Find the radius of the star (assumed to be spherical) Rigel, the bright blue star in the constellation Orion, that radiates energy at a rate of and has surface temperature 11000 .b) Find the radius of the star (assumed to be spherical) Procyon B (only visible using a telescope), that radiates energy at a rate of and has surface temperature 10000 .

Explanation / Answer

1.61 x 10^11 m for part A

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