The key to finding a star's radius from its luminosity and surface temperature is the Stefan-Boltzmann law.
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Q1: The most common type of star is
Q2: White dwarfs are approximately the same size
Q3: A few rare stars are considerably bigger
Q4: Blue stars are relatively hot,with high surface
Q6: Red stars are relatively cool compared with
Q7: The H-R diagram plots the pressure of
Q8: How bright a star appears in the
Q9: A star with a parallax angle of
Q10: Spectroscopic parallax is the process of finding
Q11: If two stars of different luminosity have
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