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試卷名稱：114年 - 114 學士後醫學系招生考試試題：物理及化學#126679
年份：114年
科目：學士後西醫物理及化學
41. The human ear canal is, on average, 2.5 cm long. ft is open to the outside and is closed at the other end by the eardrum. Estimate the frequencies (in the audible range)
of the standing waves in the ear canal. Recall that, at 20C, the speed of sound in air is about 343 m/s.
(A) 1715 Hz
(B) 3430 Hz
(C) 6860 Hz
(D) 13720 Hz
(E) 20580 Hz
