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Unformatted text preview: alexander (jra2623) oldhomework 28 Turner (92510) 1 This printout should have 12 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 3) 10.0 points The speed of waves on a guitar string is 127 m / s. What is the fundamental frequency of the string when the effective string length is 77.6 cm? Correct answer: 81 . 8299 Hz. Explanation: Let : v = 127 m / s and L = 77 . 6 cm = 0 . 776 m . f n = n v 2 L , n = 1 , 2 , 3 , , so the fundamental frequency is f 1 = 1 (127 m / s) 2 (0 . 776 m) = 81 . 8299 Hz . 002 (part 2 of 3) 10.0 points What is the fundamental frequency of the string when the effective string length is 59.5 cm? Correct answer: 106 . 723 Hz. Explanation: Let : L = 59 . 5 cm = 0 . 595 m . f 1 = 1 (127 m / s) 2 (0 . 595 m) = 106 . 723 Hz . 003 (part 3 of 3) 10.0 points What is the fundamental frequency of the string when the effective string length is 25.0 cm?...
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This note was uploaded on 10/20/2011 for the course PHY 302K taught by Professor Kaplunovsky during the Summer '08 term at University of Texas at Austin.
 Summer '08
 Kaplunovsky
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