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2 years ago

5

Determine the length of a wind instrument, assuming that it is modeled as a closed tube and that the lowest sound that it can pl

ay has a frequency of 69 Hz. The speed of sound in air is 343 m/s.

1 answer:

denis-greek [22]2 years ago

3 0

Answer:

length = 1.24m

Explanation:

velocity = frequency x wavelength

wavelength = velocity/frequency

w = 343/69 =4.97m

length = wavelength/4

length =4.97/4 =1.24m

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Alvin paddled for 44 hours with a 33-km/h current to reach a campsite. The return trip against the same current took 77 hours.

sveta [45]

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121km/h

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Let speed of boat=xkm/h

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