1. Two waves are generated on a string of length 3.0 m to produce a three-loop standing wave with an amplitude of 4.6 cm. The wave speed is 123 m/s. Let the equation for one of the waves be of the form y(x, t) = ym sin (kx + ?t). In the equation for the other wave, what are
(a) ym,
(b) k and
(c) ?.
2. What are
(a) the lowest frequency,
(b) the second lowest frequency, and
(c) the third lowest frequency for standing waves on a wire that is 11.8 m long, has a mass of 182 g, and is stretched under a tension of 156 N?