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HW3_Solutions

# HW3_Solutions - MAE 110A Fall 2009 HW#3 Due Friday am...

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Unformatted text preview: MAE 110A Fall 2009 HW #3 Due: Friday, Oct 16, 1100am Handout Problem: 1 (3 points) Circle the correct answer. i N. (MM 1. Pressure I v is an extensive property. .0 a scalar. i - depends only on the vertical coordinate. - is always uniform in a system. - is tangential stress. 2. Work - is a system property. - depends only on state. - is the same as kinetic energy. 1' always has the same magnitude as heat. '10 is path-dependent. 3. Internal energy ' - is a form of macroscopic energy. '._ - is a property. - is always greater than kinetic energy in magnitude. - is the same as work. 2. {7 points) A closed system consisting of 5 kg of gas undergoes a process during which the relationship between pressure and volume is pv”3 = constant. The process begins with p; : 1 bar, v1 = 0.2 m3/kg and ends with p2 = 0.25 bar. Determine the final volume and plot the process on a graph of pressure versus specific volume. What is the work done by the system during the process? 3. (10 points) A tank is filled with 50 cm of oil (56 0.8} overlaying 50 cm of water (SG 1.0]. A pipe leads away at an angle from the bottom of the tank. if 2.13 m of the pipe is filled with water, what is the angle the pipe makes with the horizontal? 4. (5 points) Saturated liquid water at 310°C undergoes an isotropic process {constant volume) to 0.35 MPa. Determine the final fluid phase and the enthalpy change. Plot T-v diagram. .. ; -is onlyimportantforopen systems. '- 4 ~ I... _ " l ' t a a [Probiem Z.: -.;. 1C qzss, um char-WES 0- \$NC¢SS _§_§SCr§r_-iji_n: ,4 (LIOS‘CC; (Suﬁ-*1“ 96‘ h S o ‘- u Lu I-Ha ‘f‘M-e. raid-40" EL“? 'I 19V [/3 = Cany‘: Given " (P, = I Lacu- RL : 0.2.5 30“ ’V, '~= 0 2 “"343 f" Del-Perm "'5 9-5 um} Vwa‘! , #7: . rc.‘ ﬁlo‘f“ 'ﬁ‘ut Pacer: an a (-3 'v diagram (2..) Wm k AOng fiat M : 1) CIGS-EO‘ 53/34:»: I; HCI 3'49; “Harp-ﬁﬂ'r [a ,. 2 if ‘ . , , _ _ “’1 tic” ' (Pry 3 : C I W'- 5/1' I» 5 4'14: 5‘s: - . . ‘J—L E’E‘g, ./€+ Us 4:!fo ‘VL I97 m given 'Pr'v ra’iz‘alfmﬂ" ,4 ‘? [’3‘- E l 3 'FVI " C‘ "RI/3 r> v (a) “v. r ’3 T'TOC‘QW‘. 75'. ---‘_""'—-—-m—_.____. EE‘?“ 47-9“: 24 ‘hinin "Riki PM‘HMUT ‘NV'W W14” 95’5‘ [;">’“3"“'"‘r’ I 3|“ ’3"! L=2r5m S'Gon: 08’ 12§+QVM:M: “Th; “SILL 0%“ 44¢ é E"? , “call: . 4‘3 1Flurols ara k+ resj... “I “am ma 4Tb.” _ I I, I E’t:4+icn - 4’ 5. 13:11.5“ +pqlL (gm. »—.._._....__.___.._.. L_ I H ; r I (r S‘G-‘T ﬂ n Mama «‘3an r0 CG )4“ I’D-ao' 1" 5:3: ‘- : . L (ThsﬁTLMR/FIPE CO'Q‘FidUra‘HM can Lt, ﬂmfh+ 1,5 of F JFK ~94? .faw'e. 1.7 ' " ‘- o A MOMM - ' n _ m "NWT Ac: .4 . I = - .. ' a“ 9m H!" .J' -’.|K;.r.‘W_ I m RSSVrd 4,“? 11+ 9” MUS-7L 91?“?! {OWE-Jar: A?” finin‘f' P Pm Fe" rpm wt. haw. T E‘- El + (P 4 (I) m .3! ‘H20 3 / “no’ﬁﬁko-‘apoa' MD "' I’HEO LI 0 _,_ -' ‘DISCUSSI‘M‘ i, e‘. ' —————— ‘"‘°"’" 9‘ 0-‘7m which 13 (2;; Tim Wu. ‘5'“! ill-\$34“; ﬂ "ﬂuid m ﬂaw 1', 2 : +1” ‘ "T115 5' bank roan 4/014” - Pro Ham 3 -. i: - 1- , N3_é_“c'r‘€_“°n - Mam-m1: . .-’. _ f. -.__:_--»'.q .3 Fl. ’. h“.-. J Sﬂ+ufﬂ+€r§i F.'ﬂ_v;3 quaéfy it" 3 r3. ; u. 35 V: 2,: Defer»: ML .‘ Leg-MWLIMS —_ €13. Mesh] -_ ‘ . I -——-——___ {Eo‘WH :L Avg/‘55; s ; ‘1 J. J» A 'fjw-I_;.I. Tn 310’; ...
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