soln-HW5

# soln-HW5 - EMCH 360 g-(ycwj/ijw/ Spring 2012, HW ff 5 W“...

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Unformatted text preview: EMCH 360 g-(ycwj/ijw/ Spring 2012, HW ff 5 W“ Due on Thursday (March 1, 2012) Problem#1 The figure shows a rocket motor is operating steadily. The products of combustion flowing out the exhaust nozzle approximate a perfect gas with a molecular weight of 28. For the given conditions calculate V2 in ft/s. )6 t W M 1 Liquid oxygcn: W f i r M MM N w {it with“; WK t - ’9”?! :3 5 5: W 6 "W? um ,, . a in” \ {www.«f/ ‘1 1:712:55 in, 5:2 3 w/ u“ M r 2 Q? a “M Problem#2 Ajet of water as shown in the figure strikes normal to a fixed plate. Neglect gravity and friction, and compute the force Fin Newtons required to hold the plate fixed. g 9 A! WM" MOM “(EDQ’U Kym: W» a,“ “I WV 3v RA (/M % W" ﬂ: x: L m mgéwli .2“ «a w “I ‘v’lt\%/ A c??? I”; ‘l g” M” \(jqé’ M39>l U > Problem#3 Water at 20°C flows through a 5-cm-diameter pipe which has a vertical bend of 180°. The total length of pipe between flanges 1 and 2 is 75 cm. For a case when the weight flow rate is 230 We, p1 = 165 kPa, and 192: 134 kPa. Neglecting pipe weight, determine the total force which the flanges must withstand for this flow.‘ W 7” Ell w 7 ti “7% cﬁﬂw’l 52' V EQM it)! a) K / “7%” MW m TQM ...
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## This note was uploaded on 03/20/2012 for the course EMCH 360 taught by Professor Khan during the Spring '12 term at USC.

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soln-HW5 - EMCH 360 g-(ycwj/ijw/ Spring 2012, HW ff 5 W“...

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