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A console lamp in the cabin of a spaceship appears green when the ship and observer are both at rest on Earth. When the ship is moving at 0.90c away from Earth, passengers on board see: A. nothing (the frequency is too high to be seen) B. nothing (the frequency is too low to be seen) C. a red lamp D. a violet lamp E. a green lamp |
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Answer» E. a green lamp |
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