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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
What is Hubble's law?
A) The luminosity of the Cepheid variable star is directly proportional to its pulsation period.
B) The recession velocity of a galaxy is directly proportional to its distance.
C) The recession velocity of a galaxy is inversely proportional to its distance.
D) The faster a spiral galaxy's rotation speed, the more luminous it is.
E) The faster a spiral galaxy's rotation speed, the less luminous it is.
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padrepadre
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10 years ago
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killian Author
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10 years ago
Thanks sir
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