Answer:
To find the frequency of a pressure wave, we can use the formula:
Frequency (f) = Speed of the wave (v) / Wavelength (λ)
Given:
Speed of the wave (v) = 1250 m/s
Wavelength (λ) = 4.0 m
Using the formula, we can calculate the frequency:
f = v / λ
f = 1250 m/s / 4.0 m
f ≈ 312.5 Hz
Therefore, the frequency of the pressure wave is approximately 312.5 Hz.