Understanding the Concepts

* Wavelength: The distance between two consecutive crests (or troughs) is called the wavelength (λ).

* Frequency: The number of waves passing a point in one second is called the frequency (f).

* Speed: The speed of a wave (v) is related to its wavelength and frequency by the equation: v = fλ

Calculation

1. Given:

* Speed (v) = 74 m/s

* Wavelength (λ) = 12 m

2. Formula:

* f = v / λ

3. Substitute the values:

* f = 74 m/s / 12 m

4. Calculate the frequency:

* f ≈ 6.17 Hz

Therefore, the frequency of the wave is approximately 6.17 Hz.