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Sound of Music - Closed Organ Pipe
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[QUOTE="whitehorsey, post: 2167434, member: 178500"] [b]1. One closed organ pipe has a length of 2.40m. a. What is the frequency of the note played by this pipe? b. When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long?[/b] [b]2. f = nv/2L (n = 1) change of f = absolute value of f[SUB]2[/SUB] - f[SUB]1[/SUB][/b] [b]3. a. f = nv/2L (n = 1) = 1(343)/2(2.4) = [B]71.46 Hz[/B] b. change of f = absolute value of f[SUB]2[/SUB] - f[SUB]1[/SUB] -1.4 = f[SUB]2[/SUB] - 71.46 1.4 = f[SUB]2[/SUB] - 71.46 f[SUB]2[/SUB] = 70.06, 72.86 f = nv/2L 70.06 = 343/2L 72.86 = 343/2L 140.12 L = 343 145.72 L = 343 L = 2.4479 L = 2.3538 2.4 - 2.4479 = [B]0.048 m[/B][/b] [/QUOTE]
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Sound of Music - Closed Organ Pipe
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