FIGURE EX17.28 shows the circular wave fronts emitted by two wave sources. a. Are these sources in phase or out of phase? Explain. b. Make a table with rows labeled P, Q, and R and columns labeled r1, r2, r, and C/D. Fill in the table for points P, Q, and R, giving the distances as multiples of l and indicating, with a C or a D, whether the interference at that point is constructive or destructive.

Chapter 2: Simple Harmonic Motion 2.1 The Simplest Vibration 1. What is the simplest possible system that demonstrates vibration a. A mass suspended on a spring demonstrates our system at rest: the mass is at the equilibrium position, and...