(a) When sound emerges from a loudspeaker, is the diffraction angle determined by the wavelength, the diameter of the speaker, or a combination of these two factors?

(b) How is the wavelength of a sound related to its frequency ? Explain your answers.

The following two lists give diameters and sound frequencies for three loudspeakers. Par each diameter with a frequency, so that the diffraction angle is the same for each of the speakers. The speed of sound is 343 m/s. Find the common diffraction angle.

Diameter, D .050m .10m .15m
Frequency, f 6.0 kHz 4.0 kHz 12.0 kHz

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