Respuesta :

neddmalachi1516

Answer:

300HZ

Explanation:

abhaysilver1

Here is your answer

Frequency= 300 Hz

REASON:

We know that,

Velocity= frequency × wavelength

Here,

Velocity= 120 m/s

and, wavelength= 0.40 m

So,

frequency= velocity/wavelength

f= 120/0.40

f= 300 Hz

HOPE IT IS USEFUL

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