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The sound of thunder is heard 30 seconds after seeing the lightning flash. Given that the speed of sound is 330m/s,estimate the distance at which lightning

could have occurred?


Speed of Sound = 330 m/s
Time = 30 s

Distance = Speed×Time
               =9900 m 
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i think cbsingh that u should have posted this question in physics or maths . 
As the speed of sound is 330m per sec and it is heard after 30 sec the ans is
330 * 30 
=9 km 900 m
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