If a galaxy moving away from the Earth has a speed of 1000 km/s and emits 656 nm light characteristic of hydrogen (the most common element in the universe). (a) What wavelength would we observe on the Earth?
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![If a galaxy moving away from the Earth has a speed of 1000 km/s and emits 656 nm light
characteristic of hydrogen (the most common element in the universe). (a) What wavelength
would we observe on the Earth?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F440b7269-170b-4024-8d0e-4b8a2f594bf7%2F02a6f7f9-4fd0-4c29-9da4-8c18a18ee641%2Fkdn005h_processed.png&w=3840&q=75)
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