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Unformatted text preview: Problem 4 Continuity : AV . Az V z 20 * * * 0. 015 = = V, X IT * 0. 03^ PXAz : V/ 2 = 5 m/s . Momentum :" PIAI - P 2 A2 = in ( V 2 - VI )` 60 000 * * 0 . 03 - - P 2 *T X 0. 03 2 = 1000* * 0. 0152 x 20 (5- 20 ). P2 = 135 K Pa. Problem 5 {B ; from nozzle to plate : !` 28 - = ht _ P . M; around plate in the "28 vertical z direction - OM = = 0 = - ME + PVId'V - 0. Combining and 10 solving gives ~ = ( 17 2 _ (^`= ) )128 Problem 6 Vector analysis :" V. = V , DV 2 = 5 m/s in = PV , A, = 1000 * 0 . 002 X 5 = 10 kg / s Momentum equation ; IF = m ( V 2 - V 1 ) - F, = 10 kg / s ( - 5 m / s - 5m /s ) = - 10ON FT has a magnitude of 100 N and is acting to the left ....
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