A seismograph station recorded the arrival of the first P-wave at 7 32 pm From an earthquake that ocvured 4000 kilometers away What time was it at the station when the earthquake occurred?

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1090277

2026-02-23 07:45

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P-waves, or primary waves, travel faster than other seismic waves, typically at speeds of about 6 to 8 kilometers per second. If the earthquake occurred 4,000 kilometers away and the P-wave arrived at 7:32 PM, it would have taken approximately 500 to 667 seconds (about 8 to 11 minutes) to reach the station. Subtracting this time from 7:32 PM, the earthquake likely occurred between 7:21 PM and 7:24 PM at the station.

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