These questions are for a sample test for my physics of music class. I am very c

Question

These questions are for a sample test for my physics of music class. I am very confused in this whole course and this is my last semester before I get my Bachelor's Degree, so any help is greatly appreciated!

I am trying to do these by myself but I've been getting D's on my homework and my school can't provide a tutor. Also, I cannot afford one outside of the school :(

THANK YOU!!! I mean it!

SAMPLE TEST

3. We studied Chladni patterns in class. (I also called them Chladni figures.) Describe an experiment I did in class with Chladni patterns. What is the significance of these patterns?

Explanation / Answer

Pure intervals are pure for a physical reason: if the ratio of frequencies of two soundwaves can be described in small numbers, the minima and maxima of these waves overlap nicely. This makes a chord sound at rest. If the ratio of frequencies is more complex, these overlaps form a more complex pattern and the tones do not blend properly or a difference tone appears. Similar phenomena occur if images are generated using vibrations. Several physicists from the 19th century did experiments in this direction.
Ernst Chladni wrote his book

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