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Can sound waves be polarized?
How can sound waves from a voice be converted into a digital signal?
Earthquakes generate sound waves inside Earth. Unlike a gas, Earth can experience both transverse (S) and longitudinal (P) sound waves. Typically, the speed of S waves is about 4.76 km/s, and that of P waves 8.28 km/s. A seismograph records P and S waves from an earthquake. The first P waves arrive 2.38 min before the first S waves. If the waves travel in a straight line, how far away does the earthquake occur, in km?