20-Two wave pulses with different positive amplitudes travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?
A. It is constructive interference with twice the amplitude
B. It is destructive interference with zero amplitude
C. It is constructive interference with slightly greater amplitude
D. It is constructive interference with the negative amplitude
E. The standing wave is produced

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

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.

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above