Question

If you hear thunder 7 sec after you see lightening how far are you from the lighting occurred?

Answer 1

speed of sound in air×7 wil give us the answer that is 330×7=2310 meter

Answer 2

The lightning is occurred at a distance of 2408 meters from the person.

Explanation:

The speed of sound in air is 344 m/s. We hear thunder 7 sec after you see lightening. It is required to find the how far are you from the lighting occurred.

The speed of is given by distance over time such that,

$\dfrac{d}{t}=v\\\\d=v\times t\\\\d=344\ m/s\times 7\ s\\\\d=2408\ m$

So, the lightning is occurred at a distance of 2408 meters from the person.

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Speed of sound

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