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Wavelenghts

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mikl22 | 03:02 Wed 22nd Oct 2008 | Science
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The sound of a mosquito is produced when it beats its wings at an average of 600
beats per second. What is the frequency of the sound waves? Assuming that the
speed of sound is 343 m/s, what is the wavelength of the sound waves?
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Avatar Image Teddio
Wave speed = Frequency X Wavelength

Change the subject of the equation.
08:45 Wed 22nd Oct 2008
Avatar Image nightmare
There is some ambiguity here.
Is a "beat" of the mosquito's wings a single up or down movement, or is it a complete up and down cycle?
The frequency of the emitted sound is either 600 or 1200 Hz.
Also, the up and down strokes are not equivalent: the down stroke provides lift, the up stroke is repositioniong the wing ready for the next downstroke and is of shorter duration, so the frequency is not constant.
I could go on..........
12:30 Wed 22nd Oct 2008

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