# HW soln ch2 - 2 2 Bourdon gages(see Video V2.3 and Fig 2...

This preview shows pages 1–7. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2. 2] Bourdon gages (see Video V2.3 and Fig. 2%.?) are commonly used to measure pressure. When such a gage is attached to the closed water tank of Fig. P21! the gage reads 5 psi. What is the absoiutc air pressure in the tank? Assume standard atmospheric pressure of 24.7 psi. £2 in. Bourdon gage , - l / ' I?" (53:17" H7731)" ff pﬁ)[414é§3) : FIGURE 22.2.: E”; 3 755L'é Ww~ Closed vaivc— 2.28 A U-tube manometer is connected to a Closed tank containing air and water as shown in Fig. P228. A: the closed ' end of the manometer the air pressure is i6 psia. Determine the reading on the pressure gage for a differentiai reading of 4 f1 (1) on the manometer. Express your answer in psi (gage). Assume * standard atmospheric pressure, and neglect the weight of the air columns in the manometer. Gagefnnd (y: 901mm P'BSSWG gage ..., .m-m-gmmnmmummw v. 2.35 The cyclindrica! tank with hemispherical ends shown in Fig. P235 contains a voiatile liquid and its vapor. The liq- uid density is 800 kg/ma, and its vapor density is negligible. The pressure in the vapor is 120 kPa (abs), and the atmospheric pressure is 101 kPa (abs). Determine: (a) the gage pressure read- ing on the pressure gage; and (b) the height. h, of the mercury manometer. —. -——-- “Wm—r. ~.-- r ,_ _.I._. .‘_... hw_g_e 2.38 An air-ﬁlled, hemispherical shell is at— tached to the ocean floor at a depth of 10 m as, shown in Fig. P232. A mercury barometer lo-: cated inside the shell reads 765 mm Hg, and a mercury U~tube manometer designed to giVe the outside water pressure indicates a differential reading of 735 mm Hg as illustrated. Based on these data what is the atmospheric pressure at the ocean surface? 151’: .' 7% ~ aha/pie m}- pres'sare Iris/dc shei/ Mercury Shell . / . FIGURE £52.33 53:. .1" 4! 2:5.” 5 u r7541: 6; (can asp/79145 )DVt’SSu re 33W “V Specif/t Adair/1i 075 SEQRJL‘éEV‘ Thus) mmwmeérr €5d¢éibﬁ CM fie wmeéem as fizz/m + 3;” (ﬁg/m) + 3;” 369%) “e 23;}; (0,7354%) Jo 771415 X (0.73544) “‘3 gMMWM/l (0.7(053m) :7 2- 61 A honmgeneous. 4-fttwide. 841—1031;; reclanguiarga:e weighing 800 lb is held in place by a i101'iZOlltili ﬂexibie cable as shown in Fig. P2.6I Water acts agaiasl the gate which is hinged at point A. Friction in the hinge is negligibie. Determine the tension in {he cable. / 3 , : + 37614: ’ﬁé ’3 (37%)(éﬁx’fﬂ) Er efaJ/z'ériym) EMA, 3'0 and 7‘ fmﬁmwﬂ s.- %(m)(aW)—+ ,5; (24) 7-, 0W “ (5 75f)(51'n 60°) ‘2: 2 02 1.102 An inverted test tube panially ﬁlled with air ﬂoats in a plastic water-ﬁlled soft drink bottle as shown in Videu VB. 7 and Fig. P2.lG?-.The amount of air in the tube has been adjusted so that it just ﬂoats. The bottle cap is securely fastened. A siight squeezing of the plastic bottle will cause the test tube to sink to the bottom of the bottle. Explain this phenomenon. IVAN? 7778 4:51!” ékée is floaémj 771.: M61952: do“ 77:: £14.55le 1'; éalcnced 6:, 772: éaoywz‘ ,4ng F25 . / a; S/fél’l! It; WC. 7431??? . 77‘: \$g§y¢fff #9 Va- :3 ﬁat :51:. "fire displaced mic/me éfwdéay 4.5 57519141”. 73:13 (flip/dd”? Var/r1ng a dial 2%: 7‘?“ W)“ PFPSS'l/ﬂf; 7g ﬂag/acct n; 771: fab: to)!sz 73:- k/Iltn "/72: [.5 574667010 “77:: 4;}- Press”: In 7713 W: 43) f5 Mei/eased shy/:77; M6! 77:51]»: £107: xncrmses 721g pram/re Com/)reSs/‘nj The mi— m 731: ’éaszé-éuée. 77935 ﬂ: 0759/}: 95/ Vv/e’m¢ 1.3 {z’ecrmyd (J71) a subsrgwaé decree“ 2/: 7%, ‘ S/nég ’24 A} Lav/151515715) a decrease 04 F8 WI/f (was! 7716 "£45215 ‘éuég 40 Ink. 0—H): H FFGURE P2.l02 Voi'umé’ ____.., www.___ww r , 2.!053 When a h ydmmctez' (see Fig. PEJOSzmd Vkien V3.8} hen» ing. a stem diamewr of 0.30 in. is placed in water. the stem pm» 1 E i FEUIC nudes 3.15 in. above the water surface. If the water is replaced Hydrameierm —' surgacze With a llquid having a speciﬁc gravity of 1. :0. how much of the R7 : i 5mm “’mlld PI‘OH'aIde above me iiquid surface? The lwydwn‘mm‘ “27" “*3” 7:31:53—F": weighs 0.042 1b. I k ::»_:1:~‘“'3’:'_ E {j K g €32J05 WWI? +6: hydmmcffy 15 Floaéihg [*5 weight 70113 balanced by J . 47m hwy/{m4 érce/ FEW ﬁguilzbn 21m , Z Fi/eerca/ 774%, AV WnH’V (a; w = ‘Ld 7.67 l Luigch 173 [:5 771a ju}m6}’§€a{ Lia/ameJ/Urfh The new his“? :0 (2) (56:) (Kim ) i7: :ﬂu (Elwin/Jam}- 5375,01 427.4(2) M751 % gammy; t cam = (smww JV‘: 56? Wu! K: (Can’t) ...
View Full Document

{[ snackBarMessage ]}

### Page1 / 7

HW soln ch2 - 2 2 Bourdon gages(see Video V2.3 and Fig 2...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online