Problem a spaceship is moving towards earth at a speed of, Ask an Expert

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Problem: A spaceship is moving towards Earth at a speed of 0.4c. A source on the front of the ship emits light of wavelength 632 nm according to someone on the ship.

Part A: What frequency and color (blue, green, yellow, or red) are detected by someone on Earth watching the ship?

I need help to find what frequency and color (blue, green, yellow, or red) are detected.

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Category:- Physics
Reference No.:- M91245751

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