Question
A star is five times as luminous as the Sun and has a surface temperature of $9000 \mathrm{K}$. What is its radius, compared to that of the Sun?
Step 1
We know that the star is 5 times as luminous as the Sun. The luminosity of a star is related to its radius and temperature by the Stefan-Boltzmann Law, which states: L = 4ĻRĀ²ĻTā“ where L is the luminosity, R is the radius, Ļ is the Stefan-Boltzmann constant, and Show more…
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