Understanding the Relationship

The speed of a wave (v) is directly related to its wavelength (λ) and its period (T):

* v = λ / T

Applying the Formula

1. Given:

* Wavelength (λ) = 3.0 m

* Period (T) = 0.40 s

2. Substitute the values into the formula:

* v = 3.0 m / 0.40 s

3. Calculate:

* v = 7.5 m/s

Answer: The speed of the wave is 7.5 m/s.