17. Which of the following statements about Snell's law in the context of a seismicsurvey is incorrect?Snells law:sin 0,- V1%Dsin 02V2Here, 0, is the incidence angle and 02 is the transmission angle.a. Snell’s law shows the angular relationship between the incident andtransmitted waves at the interface in terms of velocitiesb. The angle of reflection can be different from the angle of incidencec. When a seismic wave travels from a region of low velocity to high velocity,the wave is refracted away from the normal vector of the interfaced. When 02-90 degree, a head wave develops due to critical refraction

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Answered: 17. Which of the following statements…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter17: Traveling Waves

Section: Chapter Questions

Problem 33PQ

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Earthquakes at fault lines in Earths crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). The P-waves have a speed of about 7 km/s. Estimate the average bulk modulus of Earths crust given that the density of rock is about 2 500 kg/m3.
13.) Seismic waves are transverse waves that travel only on Earth's surface. a. true b. false
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…
Satellite observations of a wave field are made which determine a deep water wavelength of 312 m and a shallow water wavelength of 200 m, for wave propagation over the continental shelf. Determine the shelf depth.
A seismographic station receives S and P waves from an earthquake, separated in time by 15.0 s. Assume the waves have traveled over the same path at speeds of 4.50 km/s and 8.80 km/s. Find the distance from the seismograph to the focus of the quake. km
Earthquakes produce several types of shock waves. The most well-known are the P-waves (P for primary or pressure) and the S-waves (S for secondary or shear). In the earth's crust, the P-waves travel at around 6.5 km/skm/s while the S-waves move at about 3.5 km/skm/s. The actual speeds vary depending on the type of material they are going through. The time delay between the arrival of these two waves at a seismic recording station tells geologists how far away the earthquake occurred. If the time delay is 33 ss, how far from the seismic station did the earthquake occur? Express your answer in kilometers d = __________km
What kind of deformation does a cube of Jell-O exhibit when it jiggles?
1) If you want to know the speed of a long-wavelength wave (e.g. tsunami or tide), you can use the shallow-water wave velocity equation where g is acceleration due to gravity (~10 m/s2), d is water depth (in meters), and v = speed (in meters per second). a) Calculate the speed of a tsunami (in meters per second), assuming an average ocean depth of 4000m. b) Convert the speed of a tsunami from meters per second to meters per hour (note that 1 hr = 3600 seconds). c) Convert the speed of a tsunami from meters per hour to miles per hour (note that 1 mile = 1600m). 2) An earthquake that happened on Feb 27th, 2010 generated a tsunami that covered most of the Pacific and severely damaged some Chilean coastal towns. NOAA has a summary page of the tsunami data here..... http://nctr.pmel.noaa.gov/chile20100227/ If you click on the “DART Buoy 32412” link in the bulleted list midway down the page, a graph showing when the tsunami reached a DART buoy will download to your…
12. How are surface waves different from body waves? Which are more damaging?
Earthquakes produce several types of shock waves. The most well-known are the P-waves (P for primary or pressure) and the S-waves (S for secondary or shear). In the earth's crust, the P-waves travel at around 6.5 km/s while the S-waves move at about 3.5 km/s. The actual speeds vary depending on the type of material they are going through. The time delay between the arrival of these two waves at a seismic recording station tells geologists how far away the earthquake occurred. If the time delay is 33 s, how far from the seismic station did the earthquake occur?
(II) What is the ratio of (a) the intensities, and (b) theamplitudes, of an earthquake P wave passing through theEarth and detected at two points 15 km and 45 km fromthe source?
1) If you want to know the speed of a long-wavelength wave (e.g. tsunami or tide), you can use the shallow-water wave velocity equation v=gd where g is acceleration due to gravity (~10 m/s2), d is water depth (in meters), and v = speed (in meters per second). a) Calculate the speed of a tsunami (in meters per second), assuming an average ocean depth of 4000m. b) Convert the speed of a tsunami from meters per second to meters per hour (note that 1 hr = 3600 seconds). c) Convert the speed of a tsunami from meters per hour to miles per hour (note that 1 mile = 1600m).

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