Question

a sound wave travels at a speed of 339m/s-1.if it's wavelength is 1.5cm,what is the frequency of the wave? will it be audible?

Answer 1

Speed  ⇒ 339 m/s

Wavelength ⇒ 1.5 cm 

now change it to meter

           ⇒ 1.5 / 100

           ⇒ 0.015 m 

Speed = Wavelength x Frequency

⇒ 339 m/s  = 0.015m x Frequency

⇒ Frequency = 339 m/s / 0.015m

                       = 22600 Hz.

It is more than 20000 Hz. Therefore, it will not be audible to the human ear.

Answer 2

Answer:

Speed  ⇒ 339 m/s

Wavelength ⇒ 1.5 cm 

now change it to meter

          ⇒ 1.5 / 100

          ⇒ 0.015 m 

Speed = Wavelength x Frequency

⇒ 339 m/s  = 0.015m x Frequency

⇒ Frequency = 339 m/s / 0.015m

                      = 22600 Hz.

It is more than 20000 Hz. Therefore, it will not be audible to the human ear.

Explanation:

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