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Suppose that a star is rotating at a speed of 47.7 km/sec at its equator. Its...

Suppose that a star is rotating at a speed of 47.7 km/sec at its equator. Its spectral lines will be spread out because one side of the star will be redshifted and the other side will be blueshifted. For the 491.4-nm line of hydrogen, over how wide a range of wavelength will the spectral line be spread? The spectral line will be spread over a range of wavelength of (blank) nm.

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