Warm-Up Exercise 19

Due 12:15 pm, Wed 10 Oct 2012

Physics 123, Fall 2012

Reading assignment: 18.1-18.3

A wave carries energy. When two waves destructively interfere, however, their amplitudes cancel out. Where has the energy gone? (Consider waves on a rope for simplicity.)

In a standing wave, what is the difference between the nodes and the antinodes?