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Anonymous asked in Science & MathematicsWeather · 1 month ago

the thunder from a lightening flash is heard 4.2s seconds after you see the flash, if the temperature is 20deg. C, how far away was the it?

(it being the lightening)

1 Answer

  • KennyB
    Lv 7
    1 month ago

    The speed of sound in dry air at 20 °C is 343 m/s.  So multiply 343 by 4.2 and your answer will be in meters.

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