College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 104

The human ear canal is about 2.5 cm long. It is open at one end and closed at the other. (See Fig. 1 in Insight 14.2) (a) What is the fundamental frequency of the ear canal at 20 °C (b) To what frequency is the ear most sensitive (c) If a person's ear canal is longer than 2.5 cm, is the fundamental frequency higher or lower than that in part (a) Explain.