Chapter 16 - Chapter 16 WAVES – I 1 For a transverse wave...

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Unformatted text preview: Chapter 16: WAVES – I 1. For a transverse wave on a string the string displacement is described by y ( x, t ) = f ( x − at ), where f is a given function and a is a positive constant. Which of the following does NOT necessarily follow from this statement? A. The shape of the string at time t = 0 is given by f ( x ). B. The shape of the waveform does not change as it moves along the string. C. The waveform moves in the positive x direction. D. The speed of the waveform is a . E. The speed of the waveform is x/t . ans: E 2. A sinusoidal wave is traveling toward the right as shown. Which letter correctly labels the amplitude of the wave? ←−−−−−−− A −−−−−−−→ ←−− E −−→ ←−− C −−→ ↑ | B | ↓ ↑ ↓ D ........................... . . . . . . . . . . . . . . n v . . . . . . . . . . . .............................. . . . . . . . . . . . . . . . . . . . . . .. ............................ . . . . . . . . . . . . . . . . . . . . . ............................. .. . . . . . . . . . . . . . . . . . . . . . ............................. .. . . . . . . . . . . . . . . . . . . . ............................. .. . . . . . . . . . . ans: D 3. A sinusoidal wave is traveling toward the right as shown. Which letter correctly labels the wavelength of the wave? ←−−−−−−− A −−−−−−−→ ←−− E −−→ ←−− C −−→ ↑ | B | ↓ ↑ ↓ D ........................... . . . . . . . . . . . . . . n v . . . . . . . . . . . ............................. .. . . . . . . . . . . . . . . . . . . . ............................... . . . . . . . . . . . . . . . . . . . . . .............................. . . . . . . . . . . . . . . . . . . . . . .. ............................ . . . . . . . . . . . . . . . . . . . . . .............................. . . . . . . . . . . . ans: A Chapter 16: WAVES – I 239 4. In the diagram below, the interval PQ represents: time displacement P Q ................ . . . . . . . . . . . . . . . . . . .. .. ............................. .. . . . . . . . . . . . . . . . . .. ............................... . . . . . . . . . . . . . . . . . . . .. .............. A. wavelength / 2 B. wavelength C. 2 × amplitude D. period / 2 E. period ans: D 5. Let f be the frequency, v the speed, and T the period of a sinusoidal traveling wave. The correct relationship is: A. f = 1 /T B. f = v + T C. f = vT D. f = v/T E. f = T/v ans: A 6. Let f be the frequency, v the speed, and T the period of a sinusoidal traveling wave. The angular frequency is given by: A. 1 /T B. 2 π /T C. vT D. f/T E. T/f ans: B 7. The displacement of a string is given by y ( x, t ) = y m sin( kx + ω t ) ....
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This note was uploaded on 11/21/2011 for the course PHYS 2425 taught by Professor . during the Spring '11 term at San Jacinto.

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Chapter 16 - Chapter 16 WAVES – I 1 For a transverse wave...

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