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A plane flies at 200 m/s, emitting a 600 Hz roar. Assuming a 340 m/s speed of sound, what will be the frequency of sound waves heard by a stationary observer directly behind the plane? I NEED THIS ASAP
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A plane flies at 200 m/s, emitting a 600 Hz roar. Assuming a 340 m/s speed of sound, what will be the frequency of sound waves heard by a stationary observer directly behind the plane? I NEED THIS ASAP PLEASE

A. 247 Hz

B. 260 Hz

C. 378 Hz

D. 400 Hz

User Choise
by
4.7k points

1 Answer

5 votes

Answer:

378 Hz

Step-by-step explanation:

When source of sound moves away from stationary listener

f' = f x V / ( V + Vs)

f' = 600 x 340 / ( 340 + 200)

f' = 204000/540

f' = 378 Hz

User Wgj
by
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