) Two musicians are playing two pieces of the same instrument so that the sound
ID: 2101053 • Letter: #
Question
) Two musicians are playing two pieces of the same instrument so that the sound produced by the first musician has a frequency of 1 kHz and the sound produced by the second musician has a wavelength of 0.15 m but otherwise the sound waves are in phase and equal in amplitude (20 Points). Use the speed of sound as 342 m/s under the conditions prevailing in the music hall:a) What is the frequency at which the audience will hear rapidly rising and falling sound?
b) What is this frequency called?
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Explanation / Answer
Taking the speed of sound as 340.29 metres per second. if: velocity (metres/sec) = wavelength (metres) * frequency (cycles per second) then: wavelength = velocity / frequency = 340.29 / 20,000 = 0.017 metres
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