physics
posted by yogendra .
A person listening to a tone of 500 Hz sitting at a distance of 450m from the source of the sound. Calculate the time interval between successive compressive from the source.(velocity of sound=330m/s) [class 9th]

physics 
drwls
Period = 1/(frequency)
= 1/500 = 0.002 seconds
You don't need the sound speed or the distance.
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