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Home Q & A Board Science-Related Homework Help Physics
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Tsync Tsync
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8 years ago
Both RR Lyrae and Cepheid variable stars are stars that, when on the main sequence, were considered to be:
A) blue stragglers.
B) zero-age main sequence.
C) low mass.
D) intermediate mass.
E) high mass.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
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Minoring in physics
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RatatouilleRatatouille
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8 years ago
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Tsync Author
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#2
8 years ago
Wonderful, thanks for your time and effort
Minoring in physics
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#3
8 years ago
Cool Smiling Face with Open Mouth
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