Some studies suggest that the upper frequency limit of hearing is determined by the diameter of the eardrum. The wavelength of the sound wave and the diameter of the eardrum are approximately equal at this upper limit. If this is precisely true, what is the diameter of the eardrum of a person capable of hearing 23000 Hz? Assume a body temperature of 36.5 ◦C. The speed of sound in air at 0◦C is 331 m/s. Answer in units of cm.
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