Answer:
Frequency of wave = 500 Hz
Explanation:
Given
Wavelength = 0.68 m
Distance = 850 m
Time = 2.5 s
Frequency = ?
In order to find frequency, we have to calculate velocity. We know that the velocity is given by formula:
velocity = [tex]\frac{distance}{time}[/tex]
= 850 m / 2.5 s
= 340 m[tex]s^{-1}[/tex]
Also we know that for all waves, the relationship between wavelength λ, frequency f and velocity v is same and given by the equation:
v = fλ
Hence frequency f = v/λ
= 340 m[tex]s^{-1}[/tex] / 0.68 m
= 500 [tex]s^{-1}[/tex]
= 500 Hz
