How long is a wavelength of infrasound with a frequency of 7 Hz? _____ m What...

Question

Question

How long is a wavelength of infrasound with a frequency of 7 Hz?
_____ m

What frequency would you need to produce a sound wave in room-temperature air with a wavelength of 17 m?
_______ Hz

Answer 1

Answer #1

speed of sound in air = 343 m/s

for the frequency = 7 Hz

wavelength = speed of sound in air/frequency

wavelength = 343/7

wavelength = 49 m

the wavelength is 49 m

-----------------------------

for the wavelength 17 m

frequency = speed of sound/wavelength

frequency = 343/17

frequency = 20.18 Hz

the frequency is 20.18 Hz

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Answer 2

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