A distant star is traveling directly away from Earth with a speed of 49,500 km/s. By what factor are the wavelengths in this star's spectrum changed?

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A distant star is traveling directly away from Earth with a speed of 49,500 km/s.
By what factor are the wavelengths in this star's spectrum changed?
Transcribed Image Text:A distant star is traveling directly away from Earth with a speed of 49,500 km/s. By what factor are the wavelengths in this star's spectrum changed?
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