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The Speed of Sound in Air Is Approximately 340 m/s340 ~ { \mathrm { m } } / \mathrm { s } \text {. }

Question 33

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The speed of sound in air is approximately 340 m/s340 ~ { \mathrm { m } } / \mathrm { s } \text {. } .The speed of light in air is approximately 3×108 m/s3 { \times } 10 ^ { 8 } \mathrm {~m} / \mathrm { s } .If a lightning strike occurs 3 km away, how much time elapses before you hear the
thunder?

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