Physics 121: Physics of Music

Assignment 5

1. Hall, Chapter 3, page 53, Exercise 7.
2. Hall, Chapter 3, page 53, Exercise 8.
3. Hall, Chapter 4, page 70, Exercise 10.
4. Hall, Chapter 4, page 70, Exercise 11.
5. Hall, Chapter 4, page 70, Exercise 13.
6. Secure a nice Coke bottle and learn to play it by blowing across the top. Careful...Don't hyperventilate! As you drink away the coke in the bottle, what happens to the pitch? Start with about a centimeter of water (Coke, etc.) in the bottom. Can you identify this pitch using another instrument? Mark the side of the bottle at the water level. Now add water until the pitch goes up by one octave. Mark this spot. Measure the distance from the two water marks to the top of the bottle. Can you explain the relationship of these two distances? Is the pitch of the bottle what you would expect from simple ideas of open and closed tubes.
7. Complete Interval Spelling and Interval Playing Level 1 using Practica Musica. For extra credit complete up to Level 3 in both cases.