A sound wave with frequency 50 Hz moves at a speed of around 350 m/s in air. It travels into a wall, where it now moves at 3500 m/s. What is the frequency of the sound wave while it is inside the wall? Explain.

A sound wave with frequency 50 Hz moves at a speed of around 350 m/s in air. It travels into a wall, where it now moves at 3500 m/s. What is the frequency of the sound wave while it is inside the wall? Explain.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter6: Waves And Sound

Section: Chapter Questions

Problem 4C

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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.

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3. A sound wave with frequency 50 Hz moves at a speed of around 350 m/s in air. It travels into a wall,
where it now moves at 3500 m/s. What is the frequency of the sound wave while it is inside the
wall? Explain.

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