Geography, 29.07.2019 21:00 anne010p4bffk
Suppose a star has the same luminosity as our sun (3.8×1026watts) but is located at a distance of 20 light−years . what is its apparent brightness?
Answers: 1
W/m^2
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Suppose a star has the same luminosity as our sun (3.8×1026watts) but is located at a distance of 20...
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