The length of the sea wave is 4 m. Determine how many vibrations an inflatable rubber boat will make
| April 4, 2021 | education
The length of the sea wave is 4 m. Determine how many vibrations an inflatable rubber boat will make on it in 20 seconds, if the wave propagation speed is 4 m / s.
λ = 4 m.
t = 20 s.
V = 4 m / s.
n -?
The speed of propagation of the wave V is expressed by the formula: V = λ / T, where λ is the wavelength, T is the oscillation period.
T = t / n.
V = λ * n / t.
n = V * t / λ.
n = 4 m / s * 20 s / 4 m = 20.
Answer: an inflatable rubber boat makes n = 20 vibrations.
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