Universe
Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 5, Problem 44Q
To determine

The wavelength of the red Hα line of hydrogen that appears in the nebula’s spectrum, if the star cluster NGC 346 at speed of 158 km/s away from us.

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