Physics, 14.02.2021 03:50, brasherfamily14

A star is known to be moving at 8.46km/s toward the earth. If you observe the spectral line to be at 5.02nm, at what wavelength would you expect to measure the spectral line in a lab?

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A star is known to be moving at 8.46km/s toward the earth. If you observe the spectral line to be at...