Answer: Electromagnetic radiation from a star is observed
Chapter 37, Problem 37.24(choose chapter or problem)
Electromagnetic radiation from a star is observed with an earth-based telescope. The star is moving away from the earth at a speed of 0.520c. If the radiation has a frequency of 8.64 * 1014 Hz in the rest frame of the star, what is the frequency measured by an observer on earth?
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