**Problem 88**A spaceship heads away from Earth at 0.20c. The ship beams 450-nm light toward Earth. The light strikes a mirror on Earth and is reflected back to the ship. What is the wavelength of light received by the ship? *Hint*: Find the wavelength received at Earth, and then consider that the mirror effectively retransmits light of that wavelength. Transcription for Educational Website:**Exercise: Galactic Redshift and Velocity**1. **Problem Reference**: Complete Problem 20-92.2. **Given Condition**: Assume the redshift \( z = 5.2 \).3. **Task**: Calculate the speed of a galaxy in terms of the speed of light (\( c \)), using the formula \( v/c = \). [Answer Box Provided Here for Input]

Answered: 88. A spaceship heads away from Earth…

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