To prep for Thursday's quiz:
1. Consider a string, 0.2-m long. The fundamental frequency of this string is 40 Hz.
a. Draw the first 3 harmonics.
b. Calculate the wavelengths, frequencies and speeds of the first 3 harmonics.
2. What is the frequency of an 89.7 MHz radio wave?
3. Pendulum problem. Find the period of a 10-m long pendulum.
4. What is the difference between mechanical and electromagnetic waves. Give examples.
5. Consider concert A, vibrating at 440 Hz. What are the frequencies of: the next 2 octaves above this note, and the octave below it.
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