A sound wave source (a speaker) creates a sound wave in the air by vibrating back and forth. How does the frequency of the vibration of the speaker compare with the frequency of the sound wave that it creates? Explain your answer!

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A sound wave source (a speaker) creates a sound wave in the air by vibrating back and forth. How does the frequency of the vibration of the speaker compare with the frequency of the sound wave that it creates? Explain your answer!

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We usually think of sound waves travel in air, but sound can travel through any gas, through liquids, and even through solids. When a loudspeaker vibrating back and forth in a fluid such as air or water. Each time the cone moves forward, it collides with the molecules and pushes them closer together. A half cycle later, as the cone moves backward, the fluid has room to expand and the density decreases a little. These regions of higher and lower density (and thus higher and lower pressure) are called compressions and rarefactions

 

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