Question: Assume that P and S (primary and secondary) waves from an earthquake with a focus near the Earths surface travel through the Earth at nearly

Assume that P and S (primary and secondary) waves from an earthquake with a focus near the Earth’s surface travel through the Earth at nearly constant but different average speeds. A monitoring station that is 1000 km from the epicenter detected the S wave to arrive at 42 s after the arrival of the P wave. If the P wave has an average speed of 8.0 km/s, what is the average speed of the S wave?

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