Question: A common method for estimating the distance to a lightning flash is to begin counting when the flash is observed and continue until the thunder

A common method for estimating the distance to a lightning flash is to begin counting when the flash is observed and continue until the thunder clap is heard. The number of seconds counted is then divided by 3 to get the distance in kilometers.

(a) What is the velocity of sound in kilometers per second?

(b) How accurate is this procedure?

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