p2c-s2008-lecture-5

p2c-s2008-lecture-5 - Sou“ J lee-Fume 5' 1. Sound is a...

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Unformatted text preview: Sou“ J lee-Fume 5' 1. Sound is a langa'J—uclfna! mECz‘flnhl'CaJ wave, LE. Sauna! waves are #19 resuH' a'F longr’f-uoh‘na} mechanizaf Vibrations n'F ‘Hwe ma’furu (9.5.,m'r) J Iangffiuhnal : ~Hm dstlncemen+S a'F 'H’IF ni‘amr in 'H'IE medium are Parana! 1‘1: ‘H‘Ie elirELfr‘an a-F F’Wra gafl'an a'F ‘Hne wave -> com ressfm L. demmlaressian o‘F ‘H‘Ie medium (In: ml a-F ups. w mauamwd'qs in «hammers: wave) I+ is 'H-IE Eressure Variations "Hna‘f' “H‘an ‘lefiugh ‘H’IE medium as wax/es , ha'f +‘ne twin“!de ‘Hme mndu‘um } Jus-E as H12 q'f'oms 5&3, rm average, in +th Same Plum 4%:- ‘hanwerse waves Mirnuh'a-n : WWW-ke'H'E‘l'ina.€JU/NJ1'U$$E“/D‘EmflS/WQVES/ wave muffin. kin-II I-F PM. Source In“: -H\e waves Vibrq't'es Sinusddnlha (if H' is a. SHM flicilla‘l'ar) 'Hze PTQSSUTE waves are Murmum‘: 3 it, We ge't‘ a New: wi+‘n a. singlé Frequencfl 5%|“? 0” Sfifngeol muxl'cal' insfiumen‘i's (ram-tar, Piano,vinlin] and air- I'h wind ihs'l-rumenfs (+rumPe't,or3mh) Vibth Sinusoidan qua) Produce harmnm'c waves The Pressure variations a‘r-E 'st AF = APo an(kx—wt +¢) Ivar—- amph‘hJE The n+nm5 Vibrate like simple. hmmunic flicillq'l'ors n5 'H‘IE Pveswre wave pwpmanrfts ‘Hn‘rnucah 'HHL m-aJu‘um mic-ms (HIKE “19 mass an a. spring] r 3 ———>o-§.loe— 3 -—?I$'£—— "5 —-—)l..s-:l«e— 3- The Pressure vqu'ai'l'ans in 5000:1an very small For nJe‘i‘ airliner 01' fakeo'Ffl fiPo'" dn'zquastheres PfiSS-uvi Pa = 4 m' The 90100.0(? 0": “H'IE‘RVI'b‘Fa'tI‘DHS defermin-ES ‘Hfie Pf-I-ph (whaanar ‘H’Il +0712 1'5 high 0t- 1000) "The hanfie o-qu'ec1uencl'es anibla-l-o humans is ‘20 .‘E 4': :5 20,000 HE w 5‘26 (V-J'Hmlsin NIT 4 A“, Jufiamhzm} I. MUSFCJ h0'l'e‘I we fearful “Heaven”; of 200-600 Hz- ( Amt-3.5M) lanafl-udl'nal meohanl'ml Vl'bra'l'l'ans above 20.000 H? are cadng UIMSNHJ 5 4035,00'hlb0'f's L dalpkins can hear finese fiealueuu‘es 4403 whirl-{e (M3 500113 in UI‘l'rQSUUfidA'ITGVQ‘S W9.“ sullids 3. ll. “lids I ffifi‘flimfim sauna: Phi-fian “finfinuw a burning 44100 How “H In medial arrlfcnfl'ans H- is useJ like Samar: Sand Vibrant-fans oi ~ 40‘HE Hmruueh +912 I:ng ; -Hne waves refied- 0H shad-we; back +0 n5€hS0T i“ Hue, “time Earl-ween emissim 3 de'l'ed'l'on de-l-c rmu'nes +102 dis-l1:an (-H-m vein”? ‘0? Sound in ‘H'IE bod'a is knnwn) Md 0 3!) {00030 is rgmnshucfed 3 no! need small wavelengi‘hs (high fluctuating] “h 'rE'SDI‘Ue. Fina de'f'm'l SBEEJ a'i: Saunci AS ma Previously di‘scusseai, 'Fiar a. finhsuers-fl wave on a. Thing J +5142 5 F-E-EJ inc :1 macfinm‘cd wave is inuiepew den‘i‘ o'F -Hne ohnmchrfsh‘u ni’fie wattle anci anité defends an 1%.: favored-lies O'F "Ha-Q medium. AS we dl‘sLuSSQci, ‘Hu genera “Form is V m “5+?” ‘fi’fle A, alqsi-tcita Inertia dens when fine elasfizi-l- is ramming“: -h: a. srrin cons-hut Thus, M mlmnfifinhdfifinsmd u-fiamahaurcd ware Sow-31mm firm, Thus, -Far a. given medium, Ul'i'rnSuunti haueiswl' 'Hne Same sreeci q: :1 Musical Harte Tiwst um um axfecf 'HnojcI 43;”- M spud a-F Saunti V A) V is larger when “Hue Jenni-13 a'i: "Ha-g medium is smaiier (-Fow- ~Hn£ same QIASHcH’a] M] V iS larger ‘Fmr 5+i‘FFm- maferinis (Sah'cls, liquidh mmme 41: causes) --) s-l-vannaei- bands lad-ween n‘i‘nms Velad-ha 9": Sound in air 2 3qq m]; (N 4000 'Ft [5 ) SS brl-ween -Hne “ask a": ll‘ah‘tning For EVE” 3. 'H'IE. :5an an? 'H‘lUHJEl‘, ‘HM. ll‘ah‘t'flffla Shike was a.“ nJJH'I‘maJ mile JI‘S'E‘qn‘f Table 43.4 in hard 1 VSwfiJ air squs Hair-again 43mm“ waft? 1509M” inn gqeflmls —9 a. lacunae. Vnrfn'h'nn in sineer ¥Wafl (V=,\-f : Ami: unite {Ii-542d W W aF Vocal-1 W35} helium 1. U n [W a 431': long” 4 “ Drndd Duck” volt: Sauna (Matahmical VIILTa+f¢Ffi5) {'1'qu mudn -Fn5+€‘r in [(61-4de 3 Suh'Js Hun in causes —-} s-Iw-maer loaan lad-wee.“ nafgwaurinq mire-msJ lfke hmvl‘na a. law-cact- 'l'QMSI'u'n (restring *Force} {in an Si‘ring Pt rmiiraqd marker rah his/her «ear EXnmEIE. '. “+0 a. ‘t‘aih‘oacl hack ahd he“ *HF'LQ bang Frau-ma... hummer. A'F‘l-er “BS, (SH'HE hem-s "Hne Same bang coming %w~nu%h H19. air. Frau-n haw fir flNflla is .11“: bafifi Lamina? Ié—p—‘ig‘m l Vna-Wluci a“: sound in air- _____fl~_iL_—-——’——_‘— VI = Velmii‘i in {run A: VA'EA At=tn"t; = Vii: :33 .eL .. .3... — V1.19 At= 'lla't: ' VA v: V; VA _ viva“ __ (sqstaMB‘HH?) m "'7 °l ' 'fl—flfl '- 5150-341 Wkem a car m‘ +rvck wI'Hn a siren Passes, we hear- A drafa I'n FH-dn — n hilahfil‘ FFth as 'H'HZ Carr quraacheS - a lawer [96’th '15 if heceed: w 3125 TI‘II‘S change in 'H'Ie observed {real-Jena? 01‘ a moving wave Source, even-Waugh HA? Requencg emHfic’ [:3 H12 Source does nu‘l' change, ["5 called 'HM Datfiler E'F'Feri' Thirst is alga a. DaPPIer ski“ in Frequency 'Hne 5::qu is 1+ 25!“ wi-HA +‘ne abSfiTUET in Mafia“ The Dappler eF-Fec-l- is an impar‘fqn‘l' and annmm Phenomenon, qua is dnnraC‘I-erl‘sh‘c o'F waves Drive a, speed bani" namini'l' H1: Ji'rEL‘H‘m an" waves ai' 52a ennui Hue. observed Prequanua n-F +419 bumbs (“Have observed-F21 uenua aéHu waves) will be and-er- Hnnm w uni-ha bua'l.‘ i5 ai‘ rest 43-9: V bud" % '9' 'H'm '91: PPM!“ e-Ffid WW Hakim“; ‘Fu wi+L bad- if res-f- “are are. Mung FmPa-ri’nn't' ScienHFfC i‘esuH-s 'Hna.+ have qh'sem 'Fram 'H'Ie Doppler e-F-Feci' " DDPPIH e-F'Fec'l- 'Fm- —> («her in fiequencg af- lt'gld' “Fr-WY: all‘shn‘l' gquxi‘eS when ‘ng WINE +owa~ra|s m- awn? ‘Fr-m us (like +ha ambulance) 9 'ans is have we khan: Hrm‘l' +‘ne universe is QXEn'nding The“; are qls: mung Purl-12d wpphicafiunsl 2%., Ul‘h’ttsuuucl NQVES ‘HAoJ' bounce 13'?" havinca bloc-:1 cells are SN'H‘QJ in ‘Gequencu 1:23 Hm. Baffler era-Lt I as we will Jr‘scuss 10.1723”, {Kunming "Hm! ‘ra‘i'a MC Hou {law +0 be Measurecl (Same +échm'a'ue using microwawes O‘F h‘gki' 1‘5 used +a memure a 0195 Sim“1 wi'Hfl a. "1":qu gun”) W Consular -Fi'rsf a. moving Source; Sud/I as am ambulance "Tine obsewer 1's S'Ha'tl'mqrg The Source emf-F5 Sound wt Frequencg fl. At tub, +‘ne Source emf-P5 a. 1:22}: The. Scarce moves hmards “Hue. abserver at steed Vs The Speed o‘F Sound in "Hue medium I‘S_V_ We cansicler sl'ha-EI‘a-ns wI‘Hn Vs‘V Source 3 O observer 0 I Observer ...
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This note was uploaded on 05/23/2008 for the course PHYS 2c taught by Professor All during the Spring '08 term at UC Riverside.

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p2c-s2008-lecture-5 - Sou“ J lee-Fume 5' 1. Sound is a...

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