# homework 7 - PH 132 SPRING 2005 HOMEWORK # 7 Assigned:...

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Unformatted text preview: PH 132 SPRING 2005 HOMEWORK # 7 Assigned: 02/21/05 C’k2?I7.;//2/32152/572 50) 3”??qu 2%}, r ________‘_,_..»— :.-—-—‘-—‘ CL-[I/‘b’ZZ? %/ 3" Cw? Law 20/9; twp; WP 50 SHEETS 22-! 44 200 SHEETS 22-141 _ 22-142 1005145275 5) AMPAEI { A car battery with a 12 V" emf and an internal resistance of L 0.040 (1 is being charged with a current of 50 A. (a) What is the potential difference across its terminals? (to) At what rate is energy being dissipated as thermal energy in the battery? (c) At what rate is electric energy being converted tc'chemical energy? (d) What are the answers to (a) and (b) when the battery is used to supply 50 A to the starter motor? 410' I Cjt‘vm: 5 -= {2v internal mustang r: 0.0452, t'= 50H End? a.) V ' b) m4? at thermal energy , dr'SﬁPm‘xan ,% c) wife of ekdinkza/ energy twister, 93 a) mm) mm new I SWl'es 5N! Rtenﬁhi dtiqérence in caer hops 3 Power. 67/) Write a/oop egg/Mm: V: “E - (p Use the car/mt ai’z'e’cﬁ'm 7i) ad V: *5 .1}. :”/2v_ : 51””. 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ER; '5, Va = (Pang, + up = (20A)(2.o ) —- xsov How: ANS. ﬂ Nb;sz ': (EH?!) 2 '1 “1 .__.‘ q / 3: I n. Eh. ._ '0 : 4 .07 A /.2x M '1”) A <—*. 3H“ :20 f2_, J 00V é=f50v,fz=50v 1 533. gram!— “3 +734- (F; +6? 6” 62‘ ((-1. U 2 -— gg+£2 Mm? £3 ‘— ( J a. J i ;+ £2 f; (“,4 {9+9 g "7’1 ‘ ( £19“? {XE ': 6px} 7‘ 5/13 ‘“ .— "'" EJYQ— *— H (Miami- % «ha i a r: df’y-ééi: 2’4) '1 22: g 72: a 9 (ﬁg, : [20*06/4 \j, V: Um 63+ (13L) ‘ {2’ 2‘ 63+ {2 .3 P . i F me: :2, #005135 a: 50.2,, th75LQr , 5%.0v EM 61) REG, b)(’l ? L2) £5) {‘4 :3) in Fig, 28-31.what is the in each “5mm? PL“ h! f gﬁﬁivéient esistance-of the net— 9’ R2 = R3 = 50 0‘ R4 — E I I'LL-'0, and% = 6.0 V; assume the fitter); is ideai. 50 SHEETS 22 142 we SHEETS 22 144 200 SHEETS V .30 In} 6:“ E 3* Sb x N In... 3 5% N 6‘ “a #i_.:J...J l - ' R; R5 kRuI —-)‘> ngq 22-141 6) . ammo. Now #78 Cr'rcou’z’ Ago/<1 We 1W5: + K and €257 arr r'n semis: Race : 21+ 2234- 'A'us' 63- I b .Juﬂcﬁ'on Rule. (pow c) l L', 3 £2 + £5 + L}! (0 Loop Rule: ace€= “d,P"L'zR2 +5:0 {2) : +62 R2 :0 (3) 5”“ ‘ “3 Rs +63! PL! :0 (q) ._ E : (moi _ ,2 LI " A gas. Uéa'na 6f. (2»): (2 F31: 5'51Q: i 1 I 50 S H EETS 22-142 100 SHEETS 22 144 200 SHEETS 2244] Combmmj (5) and (q):- “63R3 ’H‘qRq: . + “LIIRH :O . 5C3 RS 1" (IZRZ =0 s a: = cezma — . _ Ams. USE/ﬂ Ct): . (“LIT Cl - 52-133 = ﬁrms.- 36* (M) 152, Off 6117 a (5E0?) r‘: F M F153 ’19 z + « 77:7 1% {(5142: ) a U0 “‘3 38E. A circuit containing ﬁve resistors connected to a balmy with a 12.0 V emf is shown in Fig. 28-38. What is the potential difference across the 5.0 ﬂ resistor? . 50 SHEETS 22-1412 100 SHEETS 22-144 200 SHEETS FIGURE 28-38 Exercisa 38. E, 21441 {#13 C/wa‘ly There are man' efmm we tau/d punk 6r kw}? 731*: K from/10W '5 I? 16.5 , however keep In mﬁw/ W! w! m: we We @0er “ﬁr 1/; ,50 mate a bop efmﬁim Had xbmgomyq 122.1009 1‘ mg; 01,0" 2:) ma cmmw More: mam mm M one MWMW 4'6” #34:)" A’O‘P' CL} :3 #26 Cat/rad ()1 Amp T) ’0') “MM” a—ga—gg=o Jr (2, may-=5 >22: 5 q...._-___- => 61: : 9323 6 __.—-—I '4' R2 Q2.on 52067;) 2 pm 3053?..- +5.06}, '..I \4; 4122 :( } _ i PH 132 Suggested Problems a. E 4.2, I I . #1 . A certain car battery with a 12 V emf has an ininal charge of I 120 A - h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how long can it deliver energy at the rate of 100 W? 55m 7772':— BATD—é/E‘? bees NJ AMT. a}: “mag £600;ch To 77:15“ 5%? :7“ Dex—male; . 7w; Ram-AT WHJC/yl 77%, 3:5 ACLDMPLJ 9/453 :9 was mg Pbmee: F02. 77415 Erase} THE 338 l R97“. mFF. I; THE g "M E 9*)": (a) 0?: Tag cunt ; a... ' l :23 E Miran-f, ; “NH : Z i . E. T METE- T—HE 90532}; i M“ M {a scan 72am, 7‘63 z MOUEcHAP—GE ;; .t 2,... Am A 3 AT ’— ? 'PEDT. bth/T‘: 5:5 Aw : 343V C a gas“- pmg: wen we «~17? “it i. v’ - ’ g : , ' a 22. d “3 £1 a U6??? [2} T EL H. L Wf’ Cafe-79 {Lt-- 791/ CO: D’ng = ‘22 E M _ _ z .9 f , a All ' 6‘ L 3 E» /£C 3 . I 6‘7 2755‘? am ca [W ' Va, T); M; .: weed/kc “0044 H ’4) (‘3; js'mxv-r“ F6 - 6~/¢v W0 50 5 HE E'I'S 22-!42 100 SHEETS 21-144 200 SHEETS 22-]41 '69 1|an i .l_......._._. 20?. Wires A and B. having equal lengths of 40.0 m and equal . , diameters of 2.60 mm, are. connected in series. A potential .iiﬁ‘er- 67‘ M ‘ j :1 5 (/0: 0M ence of 60.0 V is apgﬁed between the ends of the composite ﬁre. A 3 The resistances of in: wires are 0.12? and 0.729 0 respeCEi-Tely -3 ‘ ' .1 = X Determine (a) the camera density in each wire and (b) the guerr- 0:0. (a /o M tial difference across each wire. (c) Identify the wire materials. See Table 27—1. 5 3 60. 0 l/ 1 R9 0.32m, ) 23:0.729‘19, a) 5!; 3 '33 b) V» 2 Vs 5))??44311’45 of A *8 arrw may; , om Law,_£e.s.:smg +he Curran! cabana) we Md Me carmf‘ ‘* E 3:: <27“ 5 = The wires an: I?) Sena) So Peg. = R5 fRs it; . L J: E); and dﬁ=cfg 35¢ \$24-23} ‘_ ._5_ _ L' area" P = , t 9.5.4570») -. 3* ‘IB IVE-’5‘ w. Mam-w" 3“? ’" ’9’” 1 Eb) Ohm‘s Law =- VPr = (RR = {702009.12 7152,) = m. } U3: Ease (70A)(0.72¢252,)= ms. N075: Z = VA +V5 as H aha/d! r ' 'fliel "’},'}RJ/o.—€"’?=E_& (3.10%!)6 1%! Wkndé as)? (f {ensﬁw er A /0 L {03* BEE)“: “(0.97%){2-6N0'3MZ’: KM X/b'ig-m LA ‘t’(‘{0m) Usfnj Rick 27%, p. (058’, we (an sec ﬁa—l buff: )4 :2: ANS- . {93 3 Rs rT(0- 724 23.3(2. (o f/O"3nf\}2, ‘Z 628* /0““i\$2:- M 3 L3 4/5/01“) - Wire. 5 :5 Am. ,5 _ In an RC series circuit, % = 12.0 V, R = 1.40 MB, and C = 1 1.80 p.13. (a) Calculate the time constant. (b) Find the maximum w charge that will appear on the capacitor during charging. (c) How long does it take for the charge to build up to 16.0 “C? E i ‘2 O V' E 5 LL“) HOE—[Z c, s 130 xto‘é F l l l 5 E I l 't F a I 50 SHIEETS 22 ‘42 100 SHEETS 224 44 200 SHEETS 12-14] ~33) '. hMF‘ﬂLI {I \ l ' be ﬁve times that of the series combination. HR; = 100 Q. what J i i E E E l | i ! L..._.___,i___.__.__ . .. .._..._.. art/en: R! #00152, .J, a 5g=g 4BP. Two resistors R1 and K; may be connected either in series or in parallel mugs an ideal battery with emf ‘8. We desire the rate of electrical energy dissipation of the parallel combinaxicn to is R: '9‘ (Him: There are two answers.) iﬁolwﬁbm fResfsiom in Sen'es and hi Para/M Time are iwa poasfble' Cmnccei‘ans : sane; and para/{cf I 525: PP ii .1: ﬂRﬂ'RL) Rl‘rRz 21R: (RFRz): 3' 52‘121 785+ 22,21 *Rf 61211250 R12 “gelR14-R'L1ro 3 R21 —3R1RZ+RIZ _ Use €uadmﬁ'c Em:qu R1 = 512 i (320‘ “L! 212' -—J—._..____._._ 2 {22:58:51. 0} 290a, ANS. ...
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## This note was uploaded on 11/04/2009 for the course PHYSICS PH13100 taught by Professor Dr.wick during the Spring '09 term at Clarkson University .

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homework 7 - PH 132 SPRING 2005 HOMEWORK # 7 Assigned:...

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