Question 12 of 16 Sapling Learning A flagpole consists of a flexible, 6.90 m tal

Question

Question 12 of 16 Sapling Learning A flagpole consists of a flexible, 6.90 m tall fiberglass pole planted in concrete. The bottom end of the flagpole is fixed in position, but the top end of the flagpole is free to move. What is the lowest frequency standing wave that can be formed on the flagpole, if the wave propagation speed in the fiberglass is 2730 m/s? Hz Suppose that a standing wave on the flagpole gives rise to a sound wave of the same frequency. A son would be able to hear the sound produced by the above standing wave, since the average being can detect sounds at frequencies between 20.0 Hz and 20.0 kHz. A nearby mouse, harmonr chn one netect rqencies between 1.01 KHz and 90 0 kHz. What is the lowest flagpole that the mouse can hear? 06th O 10h O 11th UPrevious Gwo Up & View Solution e, Check Answer 0Next Ext 888 p 3 5 7

Explanation / Answer

a)

The Lowest frequency standing wave that can be formed on the flagpole is

f=V/2L=2730/(4*6.9)

f=98.9 Hz

b)

n=(1.01*103)/98.9 =10.21

n=11h harmonic

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