CBSE Class 12-science Answered
a firecracker exploding on the surface of a lake is heard as two sounds a time interval 't' apart by a man on a boat close to water surface. sound travels with a speed 'u' in water and 'v' in air. the distance from the exploding firecracker to the boat is?
Asked by Shashank Shekhar | 02 Jan, 2012, 10:48: PM
Expert Answer
take time taken by sound to travel to the boat through water=Tw
take time taken by sound to travel to the boat through air=Ta
Ta-Tw=t=d/v - d/u , where d is the distance of the plce of explosion from the boat.
so, d= tuv/(u-v)
Answered by | 03 Jan, 2012, 09:46: AM
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