The distance between a crest and trough is 20cm in ripples on the surface of the water. When 20 ripples are produced in one second, calculate the time period and wave velocity.
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2
time period =1/f= 1/20=0.05
wave velocity=20*20=400
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Answer:
Explanation:
Frequency=No of ripples produced in one second=20 ripple = 20Hz
Distance between crest and trough= 20 cm
Distance between crest and crest= 40cm
Then,
Wavelength of sound wave= 40cm
Time period of wavelength= 1/f= 1/20 sec
T= 0.05sec
V= Frequency*Wavelength
V= 20*40
V= 800m/s
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