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Physical Chemistry Exam Review 182

Physical Chemistry Exam Review 182 - P hysical Science...

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Physical Science Activities Manual ________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________ Center of Excellence for Science and Mathematics Education at The University of Martin frequency as the other tuning fork. Hit both of the tuning forks with a rubber mallet at the same time. What do you hear? [The loudness of the sound you hear will vary in a regular way. This is a feature of interference and is known as Beats. Beats are the result of compressions and rarefactions of two slightly different waves reaching your ears together. If the compressions come together they result in a greater compression. If a rarefaction from one instrument arrives at the same time as a compression from the other instrument there will be a partial cancellation and a smaller sound intensity results. This alternating loudness and softness is called beats. The frequency of these beats can be found by counting how many periods of loudness occur in a given time. It turns out that the difference in the
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