wave can be considered as being composed of 7. A complex traveling a) a number of sinusoidal traveling waves differing only in amplitudes and phases. b) a number of sinusoidal traveling waves of different frequencies and velocities. c) a number of pure tones of different amplitudes but all having the frequency of the complex traveling d) a number of sinusoidal traveling waves of different amplitudes and frequencies. 8. When one combines a 230 Hz pure tone with a 233 Hz pure tone, one will hear wave. a) white noise :b) beats c) resonance d) a pure tone e) none of these

3. The vertical position, y, of any point on a rope that supports a transverse wave travelling horizontally is given by the equation: y = 0.5 sin(4tt + 5TTX) with x and y in meters and t in seconds. Find the: a. amplitude O. 5m b. angular frequency4I rad/ c. frequency 2 Hz d. period O 5s e. wavelength 0- 4m f. wave speed 0- 8m, g. angular wave numbers T rad m h. Does this wave travel in the +x or –x direction?-X .

15) A sinusoidal wave traveling on a string has an amplitude of 5.0 cm, a period of 0.15 s, and a wavelength of 2.35 m. What is the speed at which this wave is traveling? A. 15.7 m/s B. 12.1 m/s C. 8.33 m/s D. 5.65 m/s E. 3.67 m/s 16) The figure shows a standing wave on a 140 cm long string that has been fixed at both ends and is oscillating at 400 Hz. What is the wave speed? A. 280 m/s B. 560 m/s C. 210 m/s D. 140 m/s E. 1120 m/s 17) A single-slit diffraction experiment is performed underwater and a diffraction pattern is observed on the detector screen. If the entire single-slit diffraction apparatus is then removed from the water into air, what happens to the central bright fringe? A. The central bright fringe will have the same width B. The diffraction pattern will disappear C. The central bright fringe will get wider D. The central bright fringe will get narrower 18) A fish is in an aquarium with flat sides and outside the aquarium a hungry cat is looking in at the fish. To the…

You are given the wave y(z,t)= -5cos(3x+2t) where all quantities are in SI. This wave propagates to the ____ and has angular frequency _____. A) right, 3HZ B) left, 3HZ C) None of the other choices is correct D) right, 2HZ E) left, 2HZ