Answered

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If a fast-moving car making a loud noise approaches and moves past a person, which of the following will happen as the distance between the two increases?

A) The pitch and frequency of the sound waves reaching the person's ear will remain unchanged.

B) The pitch of the sound being heard by the person will appear to be lower than the pitch of the source.

C) The frequency of the sound waves reaching the person's ear will be greater than the frequency of the waves leaving the car.

D) The pitch of the sound being heard by the person will appear to be higher than the pitch of the source.

Sagot :

Answer:

(B) Probably - Pitch will appear to be lower than the source

Pitch differences occur because of relative motions between the source and observer - it does not depend on distance measurements

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