Respuesta :

Answer:

f = 25 Hz

Explanation:

We know that :

[tex]v = f*d\\=> f = \frac{v}{d}[/tex]  where f = frequency ; v = speed & d = wavelength

Here in the question ,

Speed = 2500 m/s

Wavelength = 100 m

Using the above formula ,

Frequency = [tex]\frac{2500}{100} = 25 Hz[/tex]