A parachute passing through the lake created a wave that reached the shore in one minute. The distance between adjacent wave crests is 1.5 m, and the time between successive shocks on the shore is 2 s. What is the distance from shore to a passing steamer?
t = 1 min = 60 s.
λ = 1.5 m.
T = 2 s.
Since the wave along the lake is mechanical, then to find the distance from the steamer to the shore, it is necessary to multiply the wave propagation speed V by the time of its propagation t: S = V * t.
The speed of propagation of the wave V is expressed by the formula: V = λ / T, where λ is the wavelength, T is the period of the wave.
The distance between two adjacent crests is the wavelength λ, and the time between two successive impacts is the period of the T wave.
S = λ * t / T.
S = 1.5 m * 60 s / 2 s = 45 m.
Answer: from the steamer to the coast, the distance is S = 45 m.
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