Two sound waves are superimposed on each other


The wavelength of one sound wave is 0.81 m. The wavelength of a second sound wave is a little bit longer. When the two sound waves are superimposed on each other, we hear a 1.1 -Hz beat. Find the difference (mm) in their wavelengths. The speed of sound is 343 m/s. Give the answer to 2 significant figures.

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Physics: Two sound waves are superimposed on each other
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