Physics 122 - Exam II solution

# Physics 122 - Exam II solution - 05/30f07 1 10 points A...

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Unformatted text preview: 05/30f07 / 1. 10 points A balloon contains 3.7 liters of nitrogen gas at a temperature of 87K and a pressure of 101 kPa. If the temperature of the gas is allowed to increase to 24°C and the pressure remains constant, what volume will the gas Dy? , 7;:87KOCCU [2}: I42 "F chomv’ :> p; = [or KPIL 1P; =c0nr’ v __ —- J:- : MP .... t/ - V” ”’4’ _ LP .5- aqjc 4973: Qq7k TI. “7:; f‘? 10 --' Tl _.— \1 7,9 :-3.7E‘(997k : 26 4 L—LWWK / 3/ V4» _, I2 6L : Iaemol“ m3 2. 20 points A container with an initiai volume of_0_.9_625 m3 holds 2.5 moles of monatomic ideal gas at a temperature of 315 K The gas is now 3.... 6 compressed adiabatically to a volume of 0.0350 m3. Find: Ii"; 8'3" W“ a)Theﬁnal pressure , __ 7; ﬂ 8 * 5;). V: :0.oe.2§~3 Eli/.1— ; m2. 9 “PM“ ’0’ ‘9’” P’ ' T 4077? L n r- 95 Ml ”T? lP‘ -‘- legit-Pei T; :7 EDISK 3.? PI. Mk V'- ( V‘F .r, 0’055'Dm3 96am“; 5%. \WPU Ef-Vft (=5) p-‘i': f: P; {sh-Ef— :‘ “NW 5-: — W 3 4 mm, /3 RF ”'5? 8:91'biﬂ -375 "f. jo§x10 Pa, W 20?;7éluaq av 31 ....—-———--"""'=-—-————_._.____‘____ .1: ﬁb)Thefnal temperature ofthe gas P—C :: 0’27é r Pat, 3 i”\l ‘1 Ti ‘1'?“ “ r“ I . . .3 ‘— Lf 1‘- .J_:{_L.,_ ,. 5 :zﬂbg v’Q‘V-l" r‘ E.- ‘P; v; aces?- 105 HO ,7; ' i a P .v _. l J} a 4‘ .f I. 1/65 K NE 05!?) 0/07 3. 20 points You are 1.8 m tall and stand 3.0 m from a plane mirror that extends vertically upward from the floor. On the floor 1.5 m in front of the mirror is a small table. 0.80 m high. What is the minimum height the mirror must have for you to be able to see the top of the table in the mirror ‘0 Q; : (9r (r424 [424111309 "a amine/«‘(t'ai’) 4. 50 points . _ A film of oil, with an index of refraction of 1.48 and a thickness of 1.50 cm, . ﬂoats on a pool of water, as shown. A beam of light is incident on the oil at an angle of 60° to the vertical. a) Find the angle 6 the light beam makes with the vertical as it travels through the water. ’9' '50 én’ﬁ'h9,;/iz§in91 75’) ”ragga :ﬂsagﬁét’s “:9 h; r—i _____I )} _'-_' .- 9;§-;'E.9h9, 119% 1.33 _ on b) What is the maximum possible value for 9, the angle of refraction in the water’? 95 ﬁne/v tat/W 9:5?)ﬁ‘53 93:9)?” Elsi SW99 ’4 4:9? 0) If an oil withalarger index of ref_ ' ' sed, does youranswerto v0 . part (3) Increase, decrease, o staythe same Explain. (. Maggi dSOh/fon. : n; 9,..17”3 W. 5 .H . m ilhpfé’ﬂemafwj 9“ W wl -: Pm t“ gloom-gm}: IgooJ ==_./é M 058010? 5. 50 points a) If the temperature of the gas is 220 K at point A, what is its \o temperature at point C? _ .1". Vc .. T}; "F SEQ-OK T); = HT: _..> em _ f? H Tc ’ » I» l/c _. E Pa = ZWL'PQ' = seam-t 7“" — V» Pea—300:?» _. 9902- IOrs’s __ ”002 I... "" H'— .w V. = l0 n - 7c 5' H00 Kl O b) Find the work done by a monatomic ideal gas as it expands from point ’1’ A to point C along the path shown in the figure. 0.93 ‘L (Voovtob)'(&”j : HwVios=Yﬂ°\$J - —L (400\$r03)(a‘1w3) : 61 WOSJ : (am-MD? xi 2 luiooxro5 : V" 10:3 How much heat has been added to or removed from the gas during this process (A --> C) ‘7-"5'" s T. .5 ' __ ’ . "" 1: i W (1:00 Ewe) + ‘26 KIDS J : Z—Z/ Wig) f'cZC- \$405“: w )UCJbJ: Q- C) - Q “Ii-ENOLJ: 5M} 0580/07 6. ’LO| .. “[91:~7CM il \$2 “7:; + di‘~2~.\ 3945/15 0%” of” f or = ,‘1 m ‘1 ~_a Liff—i -.__ i _ . aim—yr; __5 if, :J’ﬂ: dozz? \09 *f = . D ’7' d -4“ MI '- 9' \ a. 1 0‘02. "YIICF’r‘ha. 02 a - ' Lﬁ ‘. _. —7(/,y) .. _;2C m1 : ~35; _ -1111... “Hi m, 5 *d"' = __ 33,6 _-'T[ I-—2-1 cm-——-L—35 cm—J 0' 01" - ‘ L! b) What is the magniﬁcation of this image? 50 points 3) Determine the distance from lens 1 to the ﬁnal image for the system shown in ﬁgure. imz Chg“. 0'” - of“ 4’, __I Cay—IV .- 35.60:»? I Off!" 35.66144—49 of“ =35-3-36: 1!.Y9M 5.": its 3‘ :‘al—_ p f- If” E “i“ E... i. E l i; Q... 9 il b -c 3 If i ...
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