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Quality of Sound

12.An earthqu...

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12.An earthquake generates both transverse (S) wave and longitudinal (P) wave in earth crest. The speed of S waves is about 4 km per sec. and that of P waves is about 8 km per sec. A seismograph records P and S waves from an earthquake. The first P wave arrives 5 minute earlier than the first S wave. The epicentre of earthquake is located at a distance of about 1200 km 2400 km 1600 km 1920 km

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