Question: 1.) Explain how echolocation works. 2.)How far away is a wall if you yell and hear the echo 6.0 seonds later? (speed of sound in

1.) Explain how echolocation works.

2.)How far away is a wall if you yell and hear the echo 6.0 seonds later? (speed of sound in air is 343m/s)

3.) What is the n value of an unknown substance if the angle of incidence inairis 32 degrees and the angle of refraction in the unknown substance is 7 degrees

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