Question: 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.

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.)

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