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It was a dark and stormy night, when suddenly you saw a flash of lightning. Six and a half seconds later you heard the thunder. Given that the speed of sound in air is about 340 m/s, how far away was the lightning bolt? (Ignore the travel time for the flash of light.) 13.
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Answer #1

Given : t= 6.5 s ; vs= 340 m/s

Solution:

As the speed of sound in air is given: vs= 340 m/s

It takes 6.5 m/s to reach the listener.

Hence the distance of lightening from the listener :

x= 340m/s × (6.5s) =2210 m = 2.21 km

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