John's rocket is flying towards the Earth at 0.8c. John uses an IR probe beam to image the atmosphere of the Earth. A detector on the Earth measures the speed of the incoming beam to be what ?
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John's rocket is flying towards the Earth at 0.8c. John uses an IR probe beam to image the atmosphere of the Earth. A detector on the Earth measures the speed of the incoming beam to be what ?
(Answer should have c in it)
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