A 500-Hz whistle is moved toward a listener at a speed of 10.0 m/s. At the same time, the listener moves at a speed of 20.0 m/s in a direction toward the whistle. What is the apparent frequency heard by the listener? (The speed of sound is 340 m/s.)

a. 473 Hz
c. 533 Hz
b. 485 Hz
d. 545 Hz


D

Physics & Space Science

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