The distance between the crest and trough of a transverse wave is 15 cm, what is the velocity of the wave if its frequency is 1000 Hz?
Distance between crest and trough is called its wavelength.
Given,
wavelength = 15 cm = 0.15 m
frequency = 1000 Hz
velocity = wavelength × frequency
velocity = 0.15×1000 = 150 ms-1