Earthwuakes generate sound waves inside the earth. Unilke a gas, the earth can experience
Channel: Doubtnut
Date: 2020-08-02

Earthwuakes generate sound waves inside the earth. Unilke a gas, the earth can experience both transverse (S) and longitudinal (P) sound waves. Typically, the speed of S wave is about 4.0 km `s^(-1)`, and that of P wave is 8.0 `kms^(-1)`. A seismograph records P and S waved from an earthquake. The first P wave arrives 4 min before the first S wave. Assuming the waves travel in straight line, how far away does the earthquake occur?