At what speed does a wave with a length of 2 meters propagate if in 20 seconds the points
| February 4, 2021 | education
At what speed does a wave with a length of 2 meters propagate if in 20 seconds the points of the wave make 50 oscillations?
λ = 2 m.
t = 20 s.
n = 50.
V -?
The speed of propagation of the wave V in the medium is expressed by the formula: V = λ * v, where λ is the wavelength, v is the vibration frequency.
The frequency of oscillations v is the number of oscillations n per unit time t. The frequency of oscillations v is expressed by the formula: v = n / t, where n is the number of oscillations of particles of the medium during time t.
The wave velocity V in the medium will be determined by the formula: V = λ * n / t.
V = 2 m * 50/20 s = 5 m / s.
Answer: the wave propagates in the medium at a speed of V = 5 m / s.
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