Understanding the Relationship

* Wavelength (λ): The distance between two consecutive crests or troughs of a wave.

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

* Velocity (v): The speed at which the wave travels.

The relationship between these is:

v = fλ

Solving for Wavelength

1. Rearrange the formula:

λ = v / f

2. Substitute the given values:

λ = 15 m/s / 5.4 Hz

3. Calculate the wavelength:

λ ≈ 2.78 meters

Therefore, the length of the wave is approximately 2.78 meters.