Doppler Effect For Reflected Sound Waves
A bat emits ultrasonic waves with a frequency of 50 kHz while flying at a speed of 8 m/s directly toward a stationary wall. Assuming the speed of sound in air is 340 m/s, what is the frequency of the echo detected by the bat?
A
54.8 kHz
B
50.9 kHz
C
52.4 kHz
D
51.2 kHz
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