36 m/s is the wave speed.
Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
In wireless systems, this length is usually specified in meters (m), centimeters (cm) or millimeters (mm).
The wave equation: v = fλ. Wavelength = λ= the length of one wave (m). Frequency f of cycles completed per second (Hz). V = speed of wave (m/s).
According to the question.
f = 12hz
λ = 3.0m
By using the formula,
v = fλ
v = 12hz x 3.0m
v = 36 m/s
Therefore,
36 m/s is the wave speed.
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