Exam 4 - Test 000133 EXAM 4 Fltfids Waves 5 Smmd Physics...

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Unformatted text preview: Test# 000133 EXAM 4: Fltfids, Waves. 5. Smmd Physics 180A Fall. 2004 ALL numbers are good to 3 significant figures. Answers may be rounded to 2 significant figures. Use a number 2 pencil for the ParSCORE farm and avoid erasure. if you smudge the answer farm. switch to another one. Assume on this test that: fliesneedcfsoundisBfl we. tiederfitycfwaterispfim=1000kgfm3 1Atmaspherenfpresstre=L0131105 Pa Put your ParSCORE form behind this page when the test is finished. _,..- I” I" ‘1”- .F' I» 'illf fl Name - Please Print You must hand in this form with the ParSCORE form or no credit. qo'l’fl A M 70:69 3, fiat—lei: a 60* r L 6‘3 *3: E; "ifl D 61'6”? r; 4,. F 96*53 D “34:5? F LTheoperatiunafahydraulicjackismappfi-cationuf e. the continuity equation. Zhuainisblohingits-whistleasit'appmadiesthetminstatim. Tomobservaat thestafiuxmevdfisueseemsmhmafrequmcynfwzowatfimand IOOOHz afieritstops. Whatwasthespeedtuthetrainwhenitwasfirst heard? Amethe speed of sound is 343 mfs. 9’ r: r_—-' *F " "w? R ran: 2 (/31: “N WEI-~15: LEI? :- 1V3. 1' 1 .35 3. The tension in a taut (stretched) rope is increased by a factor of 9. How does the speed of wave guises on the rope change. if at ali? a.ltisred1.medbyafactorof9. b. It isredmedbyafactorofl okismdtanged. Fr— @tishueasedhyafactorofi T, or e.ltisinu'easedbyafactorof9. ”T" 4.A2.0mlongstfingisvihretingmeloops(4antinodes]. Ifthetensioninthe stringis1DONandmeuibrationalfremencyis140Hz,wl'atisfl1emasspermit length {u}ofthestring? a. 3.09 gfrn b. 3.91 gfm 5.10 gfrn r’T‘ '1" .5.94g.rm $1...“ {2.1. e. none of these 41' ' “"- 5. Which will result in beats? 3.1Tresupa'pcsifinnnfwavesfiuttravelvflfl1tifferentspeeds b.Thesupemosifionefidmticaiwavesthattrauelh1flresamedrectian nmmflmmthattmvelinmedmfims d. The mperpasitinn nf wares that are identical except for slightly different amplitudes Themmsifionnfwavesflmtareidenficalexceptforsligmydifim uennes 6. A 4 kg block of aluminum (9 = 2,700 kgfmi) is suspended in water by a string from above. What is the tension in the string? a. 6.2N b.12.3N , F _ 13.5” 3,; f 64.?” 1' enmeoftmse Z 13 'J '93:?“ L: __ _b —rL1.:;1 fl+F97 ”“3 T1: MS'FED T: (Itall‘lfil’ [gflvj T- 252.? ?.Aotatainhangssnafgrtdowninfrontofmopenwindm. Amdengmtofwind Homepasttheuflndomarfltheomtainispuledoutofthewindow. Whiohlaw. principle, orequation can be used to explain this movementofthe curtain? a. Pascal's Principle. ulli's Equation. Archimedes' Pfinoipte. d. Poiseuille'e Law. e. the Wait)! equation. 3.Theeoundievelofahammerat2mi590db. Whatiethesmlevelatapoint 40mawayfromthesouroe? 9: :2 o?6dB .. .- _g;l_l [5.3de N main“ r. e.noneoftheoe 1 __.:P;[1:E1r " I, 1 ' ._-_":"_,' r . .» -- | Mi 4-") :r ‘ ‘- £1.13.- -r .p-‘i' 1- _. 'rfl- ”firm .r— '1 3““. 1“ .1. I =3!" 1 He ;"_ a 'I_.-.fl,:_.1~.,ilr--o 9.5upposeyoua'emvingingmaswing. mmfimtofywastafimaly whistloishlowing. Whereinthomotionoftheswingmuywhearthehighest pitch? @at the bottom of your on: when moving forward. ' . at the bottom of your art: when moving backward. flat the top of your are when moving forward. d.atthetopofyowarouhen moving W. 2. mm of these 10.Apipehasresonantfreqwldesat126md162Hz. Hmkmgisthepipe? @4.?6m 13.5.36rn o.6.13m d. 115 m o. moffi'bese ...
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