COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 13, Problem 37QAP
To determine
(a)
The amplitude, wavelength and frequency of the ocean wave.
To determine
(b)
The speed of ocean wave.
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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.)
Chapter 13 Solutions
COLLEGE PHYSICS
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- The energy from the sun warms the portion of the earth facing the sun during the daylight hours. Why are the North and South Poles cold while the equator is quite warm?arrow_forward(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.)arrow_forwardA tsunami traveling across deep water can have a speed of 728-km/h and a wavelength of 336-km. What is the period of such a wave? Provide your final answer in hours.arrow_forward
- How deep would a submarine need to dive to feel no motion from surface waves with a wavelength of 300 meters?arrow_forwardA tsunami is detected at 12:00 h on the edge of the continental shelf by a warning system. a) At what time can the tsunami be expected to reach the shoreline? b) if the tsunami height was 10 cm at the continental shelf, what is its height at the shoreline?arrow_forwardSailors use the following function f to estimate the wave height h, in feet, from wind speed w, in miles per hour: h = f(w) = 0.02w2.045 Explain what the answer means in terms of wave height and wind speed Suppose a sailor observes that the wave height is about 11 feet. According to the formula, what would be the speed of the wind?arrow_forward
- A lightening strike 2 km away creates a sound of thunder by making a shock wave in air from the large energy it deposits so quickly that the air cannot move out of the way. Pick the two answers that are correct if f the speed of sound is about 340 meters/second in the night air. at 20 degrees Celsius. The bang occurs before the flash The lightning flash comes before the bang by 6 seconds You can find the distance to the strike from the delay: each mile is about 5 seconds The booms are so loud that the shock wave goes nearly at the speed of light and they occur at the same time as the flasharrow_forwardOcean waves with a period of 16 s and a height of 2.5 m are incident on a region of coastline. If the wave energy can be converted into electrical energy with an efficiency of 15%, how much coastline would need to produce electricity that would replace the output of a 1000 MW coal fired power plant? Answer=34kmarrow_forwardThe speed of ocean waves depends on the depth of the water; the deeper the water, the faster the wave travels. Use this to explain why ocean waves crest and “break” as they near the shore.arrow_forward
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