ProblemEarthquakes are dramatic slips of the earth'scrust. You may feel the waves generated by anearthquake even if you're some distance fromthe epicenter.The figure shows the vertical position of theground recorded at a distant monitoring stationfollowing an earthquake that hit Japan in 2003.This particular wave traveled with a speed of3500 m/s.What were the maximum speed and they (cm)60-40-20;-20--40-maximum acceleration of the ground during the -60-passage of this earthquake wave?2060t(s)

Step 1:The peak level of extreme shaking is nearly independent of the earthquake…

Answered: Problem Earthquakes are dramatic slips…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter16: Waves

Section: Chapter Questions

Problem 43P: (a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the...

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(a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the distance to the epicenter of the quake, geologists compare the arrival times of S- and P-waves, which travel at different speeds. If S- and P-waves travel at 4.00 and 7.20 km/s, respectively, in the region considered, how precisely can the distance to the source of the earthquake be determined? (b) Seismic waves from underground detonations of nuclear bombs can be used to locate the test site and detect violations of test bans. Discuss whether your answer to (a) implies a serious limit to such detection. (Note also that the uncertainty is greater if there is an uncertainty in the propagation speeds of the S- and P-waves.)
On December 26, 2004, a great earthquake occurredoff the coast of Sumatra and triggered immense waves (tsunami) thatkilled more than 200,000 people. Satellites observing these waves fromspace measured 800 km from one wave crest to the next and a periodbetween waves of 1.0 hour. What was the speed of these waves in m>sand in km/h? Does your answer help you understand why the wavescaused such devastation?
On December 26, 2004, a great earthquake occurred off the coast of Sumatra and trig- gered immense waves (tsunami) that killed some 200, 000 people. Satellites observing these waves from space measured 800 km from one wave crest to the next and a period between waves of 1.0 hour. What was the speed of these waves in m/s and km/h? Does your answer help you understand why the waves caused such devastation?
(a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the distance to the epicenter of the quake, geologists compare the arrival times of S- and P-waves, which travel at different speeds. If S- and P-waves travel at 4.00 and 7.20 km/s, respectively, in the region considered, how precisely can the distance to the source of the earthquake be determined? (b) Seismic waves from underground detonations of nuclear bombs can be used to locate the test site and detect violations of test bans. Discuss whether your answer to (a) implies a serious limit to such detection. (Note also that the uncertainty is greater if there is an uncertainty in the propagation speeds of the S- and P-waves.)
Please and thank you! Make sure the answer is in the correct units!
(a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the distance to the epicenter of the quake, they compare the arrival times of S- and P-waves, which travel at different speeds. If S- and P-waves travel at 4.00 and 7.20 km/s, respectively, in the region considered, how precisely can the distance to the source of the earthquake be determined? (b) Seismic waves from underground detonations of nuclear bombs can be used to locate the test site and detect violations of test bans. Discuss whether your answer to (a) implies a serious limit to such detection. (Note also that the uncertainty is greater if there is an uncertainty in the propagation speeds of the S- and P-waves.)
A surfer estimates that the waves at a particular beach have an average height of 2.3 m, measured peak to trough. She also estimates that a buoy moves up and down at a rate of two cycles in 8 s. Using her estimates, find the total distance traveled in 12 s by a seagull riding the waves.
Q: Seismographs measure the arrival times ofearthquakes with a precision of 0.100 s. To get the distanceto the epicenter of the quake, geologists compare the arrivaltimes of S- and P-waves, which travel at different speeds. IfS- and P-waves travel at 4.00 and 7.20 km/s, respectively,in the region considered, how precisely can the distance tothe source of the earthquake be determined? Attempted answer: If 'd' is the distance from the geologist monitoring station to the epicenter ('d' is the quantity they want to measure), the first wave (P-wave) arrives in (d km) / (7.20 km/s) = d/7.20 s. Similarly, the second wave (S-wave) arrives in d/4.00 s. Then the measured time difference between the arrival of the 2 wave ('td') is: td = (d/4.00 - d/7.20) s d = 9*(td) Since each arrival time has an uncertainty of 0.100, and td is the difference of the 2 arrival times, td has an uncertainty of 0.200. Since d = 9*(td), 'd' has an uncertainty of 1.8 km. Therefore, the precision in measuring the…
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