At an earthquake measuring station the waves that arrive first come at a speed of 6 km/s and the waves that come second arrive at a speed of 3 km/s. If the time delay between the two waves is 15 seconds. How far is the earthquake's epicenter from the measuring station? Choose the closest answer below. a. 100 km b. 200 km c. 300 km d. 400 km
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The first wave travels at a speed of 6 km/s, and the second wave travels at a speed of 3 km/s. Show more…
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An earthquake generates both transverse (S) and longitudinal $(P)$ sound waves in the earth. The speed of $S$ waves is about $4 \mathrm{~km} \mathrm{~s}^{-1}$ and that of $P$ waves is about $8 \mathrm{~km} \mathrm{~s}^{-1}$. A seismograph records $P$ and $S$ waves from an earthquake. The first $P$ wave arrives 4 min before the first $S$ wave. The epicentre of the earthquake is located at a distance of about (a) $192 \mathrm{~km}$ (b) $384 \mathrm{~km}$ (c) $1920 \mathrm{~km}$ (d) $3840 \mathrm{~km}$
A seismograph records the S- and P-waves from an earthquake $20.00 \mathrm{s}$ apart. If they traveled the same path at constant wave speeds of $v_{S}=4.00 \mathrm{km} / \mathrm{s} \quad$ and $v_{P}=7.50 \mathrm{km} / \mathrm{s}, \quad$ how far away is the epicenter of the earthquake?
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 $4.5 \mathrm{km} / \mathrm{s},$ and that of $\mathrm{P}$ waves 8.0 $\mathrm{km} / \mathrm{s} .$ A seismograph records $\mathrm{P}$ and $\mathrm{S}$ waves from an earthquake. The first $\mathrm{P}$ waves arrive 3.0 $\mathrm{min}$ before the first $S$ waves. If the waves travel in a straight line, how far away did the earthquake occur?
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