A starship approaches its home planet at a speed of 0.10c.
Chapter 16, Problem 16.116(choose chapter or problem)
A starship approaches its home planet at a speed of 0.10c. When it is 54 * 106 km away, it uses its green laser beam 1l = 540 nm2 to signal its approach. a. How long does the signal take to travel to the home planet? b. At what wavelength is the signal detected on the home planet
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