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13 November, 04:21

How does light travel? Select one: A. Light only travels in a vacuum and travels faster when the sound source is moving. B. Light only travels in a medium and light travels faster when a sound source is stationary. C. Light can only travel in a vacuum and the speed varies depending on whether the source is moving or stationary. D. Light can travel in the air or a vacuum and the speed is constant whether the light source is stationary or moving.

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  1. 13 November, 05:16
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    I think it is the last choice because light can travel as waves but it can also travel through a vacuum in an airless space.
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