The velocity when the galaxy is moving directly away from the observer.

Question

Scientists observe a distant galaxy with a spectrometer. They find that the wavelength of the Lymann alpha Hydrogen line in the stars spectrum has shifted from its laboratory value of 121.6 nm to three times that value, 364.8 nm. According to the doppler effect, how fast is the galaxy receeding from us? (Find v/c of the galaxy relative to us).

Answer 1

Question

Chapter 4, Problem 57P

To determine

The velocity when the galaxy is moving directly away from the observer.

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