The Elephant ear canal has a length of 17 cm, and is also an open-closed tube....

The Elephant ear canal has a length of 17 cm, and is also an open-closed tube. Assume the speed of sound is 343 m/s.

a) Calculate the fundamental frequency of the Elephant's ear canal.

b) Should sound with that frequency appear to be louder to the elephant, or quieter than half that frequency? Also, can the average human hear this sound? What range of frequencies can the average human hear?

d) Draw a diagram of (i) the displacement of air molecules and (ii) the pressure of the air in the ear canal for the frequency you calculated above. You can draw the ear canal as being a straight tube.

The trunk of the elephant can extend up to 3 m long. It acts like an open-closed tube when the elephant blows through it.

c) Calculate the fundamental frequency of the sound that the Elephant can make with it's trunk.

d) If the Elephant blows even harder they can make the next harmonic. What is the frequency of this sound?

Expert Solution

genius_generous answered 2 years ago

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