In a seismic survey, an air wave can be best described as
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Q: Organ pipe A, with both ends open, has a first harmonic at frequency 300 Hz. Organ pipe B, with one…
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Q: Air fl ows at supersonic speed toward a compression ramp,as in Fig. . A scratch on the wall at point…
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Q: Describe about the primary or P-waves.
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Q: The diameter of the water pipe is 22 mm and the length from the open end to the valve is 80 m. Water…
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In a seismic
a. A wave that travels through the air
b. A compression wave that travels through the air in the pore spaces in the rock
c. A direct, compression wave that travels from the source to the geophones through the air
d. All of the above
Step by step
Solved in 2 steps
- the seismic waves energy affected by: Select one: a. 1 and 2 b. The displacement amount in rocks c. 2-The geological structure of the layers d. 1-The physical properties of the earth layersASAP5 - The seismic body waves which are lateral (Shearing) wave a) Primary waves b) Love waves c) Rayleigh waves 406935 d) Secondary waves
- You have a model consisting of 3 layers with seismic velocities v1, v2, v3, and thicknesses h1, h2, and h3, where h3 --> ∞a. Describe a scenario where the second layer may not be detected using refraction seismic.b. Describe a scenario where the second layer may not be detected using reflection seismic.Seismic waves are used to determine and examine the earth components, What type of seismic waves ?is used to penetrate the solid materials only اخترأحد الخيارات a. Short or Transverse waves b. Progressive or Longitudinal waves c. Intermediation wavesTraveling within the earth, two types of waves occur. Describe them.
- Describe about the primary or P-waves.13. The following table gives two-way travel-times of seismic waves reflected from different reflecting inter- faces in a horizontally layered medium. Travel-time [s] to Geophone to shot-point distance [m] Second reflector Third reflector First reflector 0.299 0.566 0.364 0.517 0.592 0.638 500 1000 1500 0.841 0.701 0.708 1.117 1.393 2000 0.897 0.799 2500 1.099 0.896 (a) Draw a plot of (travel-time)? against (distance)?. (b) Determine the vertical two-way travel-time ("echo-time") and average velocity to each reflecting interface. (c) Compute the depth of each reflector and the thickness of each layer. (d) Compute the true velocity (interval velocity) of each layer.Organ pipe A, with both ends open, has a first harmonic at frequency 300 Hz. Organ pipe B, with one open end, has a fifth harmonic of the same frequency. a. What is the length of each pipe? b. Sketch the standing wave associated with each pipe. c. discuss the physics responsible for the standing wave existing in the organ pipe.
- Air fl ows at supersonic speed toward a compression ramp,as in Fig. . A scratch on the wall at point a creates awave of 30° angle, while the oblique shock created has a508 angle. What is (a) the ramp angle θ and (b) the waveangle ϕ caused by a scratch at b?The diameter of the water pipe is 22 mm and the length from the open end to the valve is 80 m. Water flows in the pipe, but the valve closes abruptly, creating a pressure wave in the pipe. Calculate the fundamental frequency of this pressure wave when the speed of sound in the pipe (water) is 1320 m / s. Enter the answers rounded to the nearest whole number. The fundamental frequency isA seismic instrument is used to find the magnitude of vibration of a machine tool structure. It gives a reading of relative displacement of 0.4 um. The natural frequency of the seismic instrument is 5 Hz. The machine tool structure is subjected to a kinematic excitation at a frequency of 2 Hz. Find the magnitude of acceleration of the vibrating machine tool structure. Assume that the damping of the seismic instrument is negligible.