ou glance at your clock when you hear the first rumbling of the earthquake.  You feel the strong shaking exactly 13 seconds later.  Estimate the likely distance of the quake from you.  Assume p wave velocity as 7.97km/s and s wave velocity as 4.55 km/s.

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You glance at your clock when you hear the first rumbling of the earthquake.  You feel the strong shaking exactly 13 seconds later.  Estimate the likely distance of the quake from you.  Assume p wave velocity as 7.97km/s and s wave velocity as 4.55 km/s.   

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Step 1

Use the expression for time difference between the arrival of two waves to find the distance of the quake 

ts-tp=tSvs-Svp=tS=t1vs-1vp

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