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Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: 5 salutes assured(Waves and Sound)
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[Post New]7 May 2008 23:23:22 IST
    Subject: Waves and Sound
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ashish_banga (984)

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Olaaa!! Perrrfect answer. 154  bad job dude!! I dont approve of this answer! 1  [263 rates]
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1) find the time for which it falls



using s = ut + 1/2 gt^2          ,         u = 0



t = sq rt2 / 10



so frequency = 30 / t


 


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