An oceanic depth-sounding ship surveys the ocean bottom near the Mariana Trench, the deepest known location under the ocean. They use ultrasonic sound that travels at 1430 m/s in sea water. They find a 15.4 s delay of the echo to the ocean floor and back. What is the depth?

An oceanic depth-sounding ship surveys the ocean bottom near the Mariana Trench, the deepest known location under the ocean. They use ultrasonic sound that travels at 1430 m/s in sea water. They find a 15.4 s delay of the echo to the ocean floor and back. What is the depth?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.

Question

An oceanic depth-sounding ship surveys the ocean bottom near the Mariana Trench, the deepest known
location under the ocean. They use ultrasonic sound that travels at 1430 m/s in sea water. They find a 15.4 s
delay of the echo to the ocean floor and back. What is the depth?
(Image credit: https://www.scientificamerican.com/article/the-mariana-trench-is-7-miles-deep-whats-down-
there/)
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