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Chemistry, 07.05.2021 21:40 masad

A seismograph station recorded the arrival of the first P-wave at 7:32 p. m. from an earthquake that occurred 4000 kilometers away. What time was it at the station when the earthquake occurred? 7:20 p. m.
7:25 p. m.
7:32 p. m.
7:39 p. m.

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