Lecture 9

Topic(s)	Vibrations and waves Sound
Reading List	Pages 288-336
Objectives	Understand the meaning of the terms oscillation and vibration Be able to define and apply the concepts of period, amplitude and frequency of a vibrating system Be able to compare a pendulum to a spring-mass system Know what waves transport Understand the difference between a pulse wave and a periodic wave Be able to describe longitudinal and transverse waves Be able to explain and graphically apply the concept of superposition Know what is meant by the wavelength of a periodic wave and how it differs from the wave's period Know how to apply the wave equation: f l = v Know what is meant by a standing wave Know what is meant by the terms node and antinode Be able to discuss the phenomena of wave interference and diffraction Be able to describe what is meant by the term sound wave Understand how a complex sound is the superposition of simple sound waves of appropriate amplitude Be able to draw the standing wave patterns for stringed instruments and wind instruments Understand how motion between the source and observer causes the doppler effect
Homework	Chap. 15- Quest. 1, 3, 6, 8, 10, 19, 22, 26, 29, 31, 37, 41, 45, 47, 49 Chap. 15 - Exercises: 5, 18 Chap. 16- Quest. 2, 6, 13, 19, 23, 35, 39, 45, Chap. 16- Exercises: 7, 16, 25 Wave Motion Simulations- Study the applets on Superposition, Interference, Doppler Effect and Beats.