1. What determines the pitch of the note of a toy whistle?
2. The lowest note of the organ has a wave length of about 64 ft. What is the length of a closed pipe giving this note? Of an open pipe?
3. What is the first overtone of C? What are the second and third overtones? Give vibration numbers and pitch names or letters.
4. Why is the music of a band just as harmonious at a distance of 400 ft. as at 100 ft.?
5. A resonant air column 60 cm. long closed at one end will respond to what rate of vibration at 10°C.?
6. Can you find out how the valves on a cornet operate to change the pitch of the tone?
7. How is the trombone operated to produce tones of different pitch?
8. The lowest note on an organ has a wave length of about 64 ft. What must be the length of a closed pipe giving this note?
9. What is the approximate length of an open organ pipe which sends out waves 4 ft. long?