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Question
Explain how sound is produced by your school bell.
Solution
When the school bell vibrates, it forces the adjacent particles in the air to vibrate. This disturbance gives rise to a wave, and when the bell moves forward, it pushes the air in front of it. This creates a region of high pressure known as compression. When the bell moves backwards, it creates a region of low pressure known as rarefaction. As the bell continues to move forward and backward, it produces a series of compressions and reactions. This makes the sound of a bell propagate through the air.
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