Understanding the Relationship

* Frequency (f): How many waves pass a point per second (measured in Hertz, Hz).

* Wavelength (λ): The distance between two corresponding points on consecutive waves (measured in meters, m).

* Speed (v): How fast the wave travels (measured in meters per second, m/s).

The Formula

The relationship between these quantities is:

* v = fλ

Solving for Wavelength

1. Rearrange the formula to solve for λ: λ = v / f

2. Plug in the given values: λ = 18 m/s / 5 Hz

3. Calculate: λ = 3.6 meters

Therefore, the wavelength of the wave is 3.6 meters.