A wave with a frequency of 4 Hz propagates along the cord at a speed of 8 m / s. What is the wavelength?

Given:
Wave frequency = 4 Hz;
V = 8 m / s.
Find the wavelength of the lambda.
Decision:
We will use this formula:
λ = v * T.
To use it, you need to find a period. It is found by the formula: T = 1 / frequency. Let’s find him.
T = 1/4
Let’s find the answer by substituting the known values there.
λ = 8 * 1/4 = 2 m
Answer: 2