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inna [77]
3 years ago
5

Which is true?

Physics
2 answers:
nikklg [1K]3 years ago
7 0

The correct answer is C. Light waves slow down as they travel from the air though the water.

aniked [119]3 years ago
6 0

Light waves slow down when they go from air into water.  Then, once they're in the water and traveling through it, they don't change speed.

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The radius of the sphere in meters is ,r = 10\sqrt{5} -20

Think about the angle the ground and the shadow make. Since the sun's beams are parallel, the angle created by the stick's shadow is also equal. Since the stick is 1 m high and its shadow is 2 m long, we know that the stick's angle is arctan 1/2. Therefore, by thinking of a right-angled triangle,

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brainly.com/question/14100787

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