Chapter 17

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When sound passes from one medium to another where its propagation speed is different, does its frequency or wavelength change? Explain your answer briefly.

Vw= frequency time wavelength because of change in speed of sound ,the wavelength also changes but the frequency remains the same.

Six members of a synchronized swim team wear earplugs to protect themselves against water pressure at depths, but they can still hear the music and perform the combinations in the water perfectly. One day, they were asked to leave the pool so the dive team could practice a few dives, and they tried to practice on a mat, but seemed to have a lot more difficulty. Why might this be?

speed of sound is different in different mediums. sound travels with more speed in denser medium. water is more dense than air

How do sound vibrations of atoms differ from thermal motion?

thermal motion is random since it depends on the thermal energy to move the atoms in the system. however sound vibrations of atoms for a sound wave is ordered


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