How fast would a star have to travel to make violet light ( = 400 nm) appear

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How fast would a star have to travel to make violet light (λ = 400 nm) appear to be red (λ = 600 nm)? Assume the star is moving along the line that connects the star to the Earth. Is this star moving toward you or away from you?

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College Physics Reasoning and Relationships

ISBN: 978-0840058195

2nd edition

Authors: Nicholas Giordano

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Question Posted: Feb 16, 2019 11:34 AM

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How fast would a star have to travel to make violet light ( = 400 nm) appear

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College Physics Reasoning and Relationships

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