The Formula

The speed of a wave (v) is calculated using the following formula:

* v = fλ

Where:

* v is the wave speed (in meters per second, m/s)

* f is the frequency (in Hertz, Hz)

* λ is the wavelength (in meters, m)

Applying the Information

You've provided:

* f = 2 Hz

* λ = 10 m

Calculation

Substitute the values into the formula:

* v = (2 Hz) * (10 m)

* v = 20 m/s

Answer

The speed of the wave is 20 m/s.

Important Note: The amplitude (3 m) is not needed to calculate the wave speed. Amplitude describes the maximum displacement of the wave from its resting position.