A star at a distance of 4 pc has an apparent magnitude of 2. What is its absolute magnitude? Given the fact that the Sun has a luminosity of 3.9 x 1026 W and has an absolute magnitude of about 5, find the luminosity of the star.

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A star at a distance of 4 pc has an apparent magnitude of 2. What is its
absolute magnitude? Given the fact that the Sun has a luminosity of 3.9 x
1026 W and has an absolute magnitude of about 5, find the luminosity of
the star.
Transcribed Image Text:A star at a distance of 4 pc has an apparent magnitude of 2. What is its absolute magnitude? Given the fact that the Sun has a luminosity of 3.9 x 1026 W and has an absolute magnitude of about 5, find the luminosity of the star.
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