alleryThunder reaches you exactly 1 second after a flash. Distance to the strike?
AAbout 34 m
BAbout 3 km
CAbout 343 m
DAbout 3.4 km
Answer & Solution
Correct answer: C. About 343 m
1. Light arrives almost instantly.
2. Sound covers about 343 m in one second.
3. So the strike is about 343 m away.
_Source: Wikipedia, Lightning, The distance approximation trick_
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