you and a friend launch waves at opposite ends of the stretched string after class. you shake the string at 5 hz with a 15 cm amplitude, and your acquaintance shakes the other end at 2 hz with a 10 cm amplitude. what is the largest (most positive) displacement in cm of the string at any point at any time? explain. b. is your wave faster? explain.

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.