exam1-3 - #14C10/04 LirOEWW Et Sfr‘mg frandmg Wat/25 A...

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Unformatted text preview: (#14C10/04) LirOEWW Et- Sfr‘mg frandmg Wat/25. A string fixed a! bo'th enclé has a iength of 80 cm. If the wave speed in the string is 109 mr’s, What is the associated 51" harmonic frequency? 0 ”5: ‘OO‘WS 6: 7‘h ’ ‘ W: —-~——-2‘L f2; 3:8; fl — " ’ if N j .3 g S" Li” 7“ gt; I" : S [(2qu ”A I g (in... . , 2, C 0.2a 5‘3 fl S r;1f3:,w\‘-'-O.\v.«- 4", Idea! vs. Real: A eiosed air pipe has a radius of {0 cm. ldealiy, the antinode is at the open end‘ _._ x \ ._ I Let the ideal fundamentai frequency be 256 Hz. Realistieaily, the antinucle is 0.6radius beyond the / open end. Determine the real fundamental frequency. f, 7 , (‘- L. J - - 3 4 1:2: “VAN 7\=—&u— ~l W4 “Sign L 1 THE ., LZ§QG4 1-D e“: 0 . 233.2% he: €363 Li 0 e r r: L Fem “2‘3; (0‘3stqu (0 9C0 ‘3 ; 555,? ureqk :o‘flsoM t g: M w “:1" " gr “9‘ 1 533%" 71“ rm 1) WW ...
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