If spectral lines from a distant galaxy are 30% longer than when the source is at rest, how fast is the galaxy receding? O a. 0.30 c O b.0.26 c O c. 2.69 c d. 0.69 c
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![If spectral lines from a distant galaxy are 30% longer than when the source is at rest, how fast is the galaxy receding?
O a. 0.30 c
b.0.26 c
O c. 2.69 c
d.0.69 c](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4f4f96fc-8429-4823-a7c7-1dc01feb44e0%2F3f4fabc5-8922-4de6-9475-7f5cf8005dd7%2Fm24834_processed.jpeg&w=3840&q=75)
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