The wave source made 10 oscillations in 20 s. If the wave speed in the medium is 200 m / s, then the wavelength is?
| March 22, 2021 | education
t = 20 s.
n = 10.
V = 200 m / s.
λ -?
The wavelength λ is the distance between two adjacent peaks or troughs of the wave. The wavelength λ is determined by the formula: λ = V / v, where V is the wave propagation speed, v is the wave frequency.
The frequency of the wave v is the number of oscillations per unit of time. The frequency is determined by the formula: v = n / t, where n is the number of oscillations during time t.
We find the wavelength λ by the formula: λ = V * t / n.
λ = 200 m / s * 20 s / 10 = 400 m.
Answer: the wavelength is λ = 400 m.
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