R1 = 13/3 = 4.33 m
R10 = 2 m
T = 5 seconds / 10 waves = .5 s
f = 1/T = 2 Hz
wavelength = (4.33-2)/9 = .259 meter
v = .259/.5 = .518 m/s
A stone is thrown into water pond forming 10 waves in 5 seconds. The diameter of the first crest is 13 m and the diameter of the last crest is 4m. Find
a.the periodic time
b.the frequency
c.the wave length
d.the wave velocity
1 answer