frequency=4Hz
wavelength=5m
amplitude=1/2×2=1m
period=1/frequency
1/4=0.25seconds.
velocity=wavelength×frequency
=5×4
=20m/s
Answer:
4 Hz
5 m
1 m
20 m/s
Explanation:
The first part of the sentence describes the frequency of the wave i.e., the number of oscillations every second
f = 4 /s = 4 Hz
The second part of the sentence describes the wavelength or period of the wave i.e., the distance between successive crests or troughs.
λ = 5 m
The last part of the sentence describes the peak to peak amplitude of the wave i.e., the height between the lowest part to highest part of the wave
[tex]2{\hat {U}}=2\ m[/tex]
The peak amplitude is given by
[tex]{\hat {U}}=\frac{2}{2}=1\ m[/tex]
The velocity of a wave is given by
v = fλ
⇒v = 4×5
⇒v = 20 m/s
The velocity of the wave is 20 m/s
