A person stands directly in front of two speakers that are emitting the same pure tone. The person then moves to one side until no sound is heard. At that point, the person is 4.90 m from one of the speakers and 4.93 m from the other. What is the frequency (in Hz) of the tone being emitted? (Assume air temperature to be 20°C.)
Answer:
The half wavelength is difference in distance of the speakers
Hence
Assume the speed of sound is 343 m/s at 20 degrees C.
The frequency of the sound emitted is
Mathematics
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