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Sound travels through air at about 13 of a kilometer per second. If thunder is heard 6 seconds after a flash of lightning, about how many kilometers away was the lightning?

User Anuj Gupta
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If sound travels through air at around 13 of a kilometer per second, and thunder is heard 6 seconds after a flash of lightning, it would be 78ths of a kilometer. Although, I can't simplify that for you. Sorry. ^-^
User Pulak
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