Question

In a water tank,on throwing a stone 20 full ripples are produced in 1 sec.the distance a crest and a through is 10 cm.calculate:
(a) the wavelength of ripple
(b) frequncy of ripple
(c) velocity of the ripples.

Answer 1

I don't now

Answer 2

Frequency=20
Wavelength=10*2=20cm=0.2m
.
. .V=wavelength*frequency=0.2*20=4.0m/s

Answer 3

wavelength=10 into 2 =20m.frequency=20hz.velocity=frequency into wavelength=20 into 20=400ms