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2. When light enters glass it slows down. When it reemerges from the other side it...

2. When light enters glass it slows down. When it reemerges from the other side it ____

12. Radio waves and light differ in their ____.

17. A spotlight is coated so that it won’t transmit magenta light from its white-hot filament. What color is the emerging beam of light?

my answers

2 it slows down again?

12 frequency of oscillation?

17 green?

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