The float on waves made 30 oscillations in 20 s, and at a distance of 20 m the observer counted

The float on waves made 30 oscillations in 20 s, and at a distance of 20 m the observer counted 10 ridges. The wave speed is.

Data: t (duration of oscillations of the taken float) = 20 s; n (number of oscillations) = 30 oscillations; S (distance to the observer) = 20 m; k (number of ridges) = 10 ridges.

To calculate the wave speed, we apply the formula: V = λ / T = (S / k) / (t / n) = S * n / (t * k).

Let’s calculate: V = 20 * 30 / (20 * 10) = 3 m / s.

Answer: The wave speed is 3 m / s.