Question

A continuous progressive transverse wave of frequency 8 Hz moves across the surface of a ripple tank

If the wavelength of the transverse wave is 32 mm, calculate the speed with which wave travels across the surface of the water.

Answer 1

Frequency = f = 8Hz

Wavelength = λ = 32 mm = 32 × 10^-3 m

Speed = v = ?

We know, v = λf

v = 32 × 10^-3 × 8

v = 256 × 10^-3 ms^-1 

v = 256 × 10^-3 × 10² cms^-1 

v = 256 × 10^-1 cms^-1 

v = 25.6 cms^-1