problem_pdf - pokharel (pp7242) Waves and Sound walther...

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Unformatted text preview: pokharel (pp7242) Waves and Sound walther (16180) 1 This print-out should have 18 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. First Assignment 001 10.0 points Sound in air can best be described as which of the following type of wave? 1. Electromagnetic 2. Torsional 3. Polarized 4. Longitudinal 5. Transverse 002 (part 1 of 2) 10.0 points A standing wave of frequency 5 hertz is set up on a string 2 meters long with nodes at both ends and in the center, as shown. 2 meters Find the speed at which waves propagate on the string. 1. 5 m / s 2. 20 m / s 3. 10 m / s 4. 2 . 5 m / s 5. . 4 m / s 003 (part 2 of 2) 10.0 points Find the fundamental frequency of vibration of the string. 1. 2 . 5 Hz 2. 5 Hz 3. 1 Hz 4. 7 . 5 Hz 5. 10 Hz 004 10.0 points The graph below represents the potential en- ergy U as a function of displacement x for an object on the end of a spring ( F =- k x ) oscillating in simple harmonic motion with amplitude x max . + x max- x max x U U max Which graph represents the kinetic energy K of the object as a function of displacement x ? 1. + x max- x max x K K max 2. + x max- x max x K K max 3. + x max- x max x K K max pokharel (pp7242) Waves and Sound walther (16180) 2 4. + x max- x max x K K max 5. + x max- x max x K K max 6. + x max- x max x K K max 7. + x max- x max x K K max 005 10.0 points An ideal massless spring is fixed to the wall at one end, as shown below. A block of mass M attached to the other end of the spring oscillates with amplitude...
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This note was uploaded on 06/07/2010 for the course PHYSICS 58930 taught by Professor Kleinman during the Fall '09 term at University of Texas at Austin.

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problem_pdf - pokharel (pp7242) Waves and Sound walther...

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