Answer :
120 centimeters per second, is the wave speed or wave velocity.
How fast do waves travel?
Wave velocity is the amount of distance a wave travels in one unit of time. The rate at which a particle disturbance like a crest or trough or compression or rarefaction spreads in a medium is known as the particle's propagation speed.
Given,
Amplitude (A) = 2cm,
Frequency (f) = 12hz,
Time period [tex]T=\frac{1}{f} =\frac{1}{12} s[/tex]
The horizontal distance between the closest peak or trough, respectively, is referred to as the wavelength. A crest's distance from the closest tough was specified. The distance between a crest and the closest crest is therefore two times that distance.
This is the wave length :
λ=(2)(5)
=10cm
The wave velocity or wave speed is given by:
v = λf
v=(10)(12)
=120 cm/s
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