Question

The distance between one crest and one trough of a sea wave is 4.5 m. If the waves are produced at the rate of 240/min, calculate the wave velocity.

Answer 1

Distance between one crest and one trough of a sea wave = 4.5 m

`=> lambda/2 = 4.5`

⇒ λ = 4.5 × 2 = 9 m

Frequency = 240 min^-1 

f = `240/60`s^-1 

f = 4 s^-1 or 4 Hz

Wave velocity = v = λf

v = 9 × 4 = 36 ms^-1