P 040 how f ar and i n what di r ecti on shoul d a cel

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Unformatted text preview: l l i st move her f i nger to adjust a str i ng's tone f r om an out­of ­tune 445 Hz to an i n­tune 440 Hz? The str i ng i s 68.0 cm l ong, and the f i nger i s 20.6 cm f r om the nut f or the 445­Hz tone. (Indi cate the di r ecti on wi th the si gn of your answer . Take the di r ecti on towar ds the nut to be posi ti ve.) cm www.we ba ssign.ne t/we b/Stude nt/Assignme nt- Re sponse s/la st? de p= 5980639 4/5 6/18/13 HW 18 9. –/1 points S e rCP 9 14.P .041. A str etched str i ng of l ength L i s obser ved to vi br ate i n f i ve equal segments when dr i ven by a 706­ Hz osci l l ator . What osci l l ator f r equency wi l l set up a standi ng wave so that the str i ng vi br ates i n two segments? Hz 10.–/5 points S e rCP 9 14.P .043. A steel wi r e wi th mass 21.5 g and l ength 1.4 m i s str ung on a bass so that the di stance f r om the nut to the br i dge i s 1.10 m. (a) Compute the l i near densi ty of the str i ng. kg/m (b) What vel oci ty wave on the str i ng wi l l pr oduce the desi r ed f undamental f r equency of the E1 str i ng, 33.49 Hz? m /s (c) Cal cul ate the tensi on r equi r ed to obtai n the pr oper f r equency. N (d) Cal cul ate the wavel ength of the str i ng's vi br ati on. m (e) What i s the wavel ength of the sound pr oduced i n ai r ? (Assume the speed of sound i n ai r i s 343 m/s.) m www.we ba ssign.ne t/we b/Stude nt/Assignme nt- Re sponse s/la st? de p= 5980639 5/5...
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This document was uploaded on 01/13/2014.

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