Question A line with rest wavelength = 1000 nm is observed in a star to have...
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Question A line with rest wavelength = 1000 nm is observed in a star to have a wavelength A = 999 nm. What is the star's radial speed V, (in km/s) and is it moving toward or away from us? Question A line with rest wavelength = 1000 nm is observed in a star to have a wavelength A = 999 nm. What is the star's radial speed V, (in km/s) and is it moving toward or away from us?
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