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# exam1-1 - Physics 4C(1 D Lee 7 q C V October 1 2004 kinds...

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Unformatted text preview: / Physics 4C (1% D. Lee) 7 q C? _ V October 1, 2004 kinds of} mm. Fina / EXAM #1 5(CJJCLJ . *l’lease draw a useful picture & bot the ﬁnal answer to three signiﬁcant ﬁgures (especially ifunits are involved); air is assumed to be at 20 “C & I am “good luck” Sfrrng Wave Speed: A string has a mass ofOAZ kg and is under a tension at 100 N. The wave in this string requires 0.14 s to travel its entire length. Calcuiate the length ofthis string. "if m: cm; ’2 WON moms - JL ,5, V i; it??? , l» VIA / r’ I-— a a"; 23"" {-3 TL) ,/ii-"‘§“ ’t's‘ «a « WC m ‘ l (’3. ‘( -__,__,.)~J t 4‘ .7? “E I. 1 Rue-L? i If; C1 \CTOVV‘ I Hﬁﬁl/ l 7 ,5. Sme9 Wave Power. You supply 21 average power'of 123 W and a driving frequency 0f222 Hz on a string that has a linear mass density of0.04 kg/in and is under a tension of 100 N. What is the amplitude Oftlie string wave in [cm]? ij-v P . é ._ L?“ T ;. l3; 1; ifJ J -- 7 a. “it ;, (.3 .0 1? ZN ‘ {afﬁx} JC‘ L 11:“; . fl 7'; ”Tr '— -‘ flaw—'2} 7 i/ ‘ r7 [L ((7111; %:82— f M A.— M' P.» L. _ ( .Z/TTITi‘ri Q? .. Egj: ( N __ it i ’ f J ; (' Jl ‘ G: 1%- ‘jq/j Zfl’f'f “\nfﬁl [LOOK leaves?) w my :4sz [Jill-wk; O 03’7“?) if“ 9"“ _ .l/ N »L [__.A ...
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