Question

A sea wave Strikes a rock whose two successive crests are 175 apart if the crests are moving at 25 metre per second find out the time in which sea wave strikes The Rock again

Answer 1

Answer:

The answer is 7 seconds.

Explanation:

The distance between two successive crests or two successive troughs is known as wavelength of wave.

Given data:

Distance between two successive crests = 175 m

Therefore wavelength of sea wave , λ = 175 m

Speed of wave , V = 25 m/s

To find out the time we can use the formula V = λ/T

where T is time period. Now put the values

T = λ/v

   = 175m/25m/s = 7sec

Hence after 7 seconds sea waves will strike again.