4. S and P waves, simultaneously radiated from the hypocenter of an earthquake,

Question

4. S and P waves, simultaneously radiated from the hypocenter of an earthquake, are received at a seismographic station 17.3 s apart. Assume the waves have traveled over the same path at speeds of 4.50 km/s and 7.80 km/s. Find the distance from the seismograph to the hypocenter of the quake. 10 pts



5. A telephone cord is 4.00 m long. The cord has a mass of 0.200 kg. A transverse pulse is produced by plucking one end of the taut cord. The pulse makes four trips down and back along the cord in 0.800 s. What is the tension in the cord?

Explanation / Answer

s wave=4500 m/s==>p wave=7800 m/s time=17.3 s

x=4500*7800*17.3/(7800-4500)184009.1 meters

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