Physics, 06.05.2020 05:46, AIhunter2884
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of the P wave and then, 77.2 s later, records the arrival of the S wave. Assuming that the waves travel in a straight line, how far (in terms of m) is the seismograph from the earthquake?
Answers: 2
![d[\frac{1}{4.5}-\frac{1}{8}]=77.2](/tpl/images/0646/9469/edc08.png)
![d[0.0972]=77.2](/tpl/images/0646/9469/38980.png)
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When an earthquake occurs, two types of sound waves are generated and travel through the earth. The...
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