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Physics 16 Online
OpenStudy (anonymous):

Which statement about how light travels is True? Light waves can travel in a vacuum and travel at a constant speed even if the light source is moving. Light waves need a medium to travel, and they travel at the same speed even if the light source is moving. Light waves can travel in a vacuum and will travel faster if the light source is moving forward. Light waves need a medium to travel, and they travel faster if the light source is moving forward.

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