Answer:
1.625 m/s
Explanation:
The speed of a wave is expressed as
V = λf........................... Equation 1
Where V = speed of wave, λ = wavelength, f = frequency of the wave.
Recall,
f = 1/T ................ Equation 2
Where T = Period or time taken for the wave crest to pass the bow of the anchored boat
Given: T = 4.0 s.
Substitute into equation 2,
f = 1/4
f = 0.25 Hz.
Also given: λ = 6.5 m.
Again, substitute into equation 1,
V = 6.5(0.25)
V = 1.625 m/s.
Hence the speed of the wave = 1.625 m/s
