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Physics, 10.06.2021 19:10 biyah40

A Cepheid variable star has an apparent brightness of 85 and a period of 14.3 days. This means the star is 85 times brighter than the Sun would appear at a distance of 1 Megaparsec. About how far away is this star?

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A Cepheid variable star has an apparent brightness of 85 and a period of 14.3 days. This means the s...
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