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Physics, 30.09.2019 18:30 jyworthy

Which of the following is not a factor that affects the apparent brightness of a star as seen from earth?
a. how old the star is
b. how big the star is
c. how hot the star is
d. how far away the star is

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Which of the following is not a factor that affects the apparent brightness of a star as seen from e...
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