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Home Q & A Board Science-Related Homework Help Physics
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killian killian
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10 years ago
A standard candle is ________.
A) a 7-cm-long wax candle
B) a light source of known luminosity
C) another name for a main-sequence star
D) another name for a barred-spiral galaxy
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padrepadre
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9 years ago
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killian Author
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#2
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9 years ago
Thx man
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