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staedtler staedtler
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7 years ago
Light, when it passes from air into a dense but transparent material such as glass,
A)   slows down.
B)   maintains its speed, as required by the laws of physics.
C)   changes its speed to that of sound in the medium.
D)   speeds up.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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