423_Physics ProblemsTechnical Physics

423_Physics ProblemsTechnical Physics - Chapter 14(c Take...

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Chapter 14 425 (c) Take point 1 in the wide hose and 2 just outside the nozzle. Continuity: Av v v Pg y v y v PP 11 22 2 1 2 1 1 2 2 2 1 2 0 2 10 42 4 66 12 1 12 1 9 135 1 2 1 2 0 1 2 1000 0 1 2 121 7 35 10 9 07 10 7 26 10 = F H G I K J = F H G I K J == ++ = = ++ −= × − × = × ππ ρρ .. . . . . cm 2 cm 2 ms kg m m s kg m m s Pa Pa Pa 33 ej bg P14.41 Flow rate Qv A v A = 00120 . m s 3 v Q AA 2 31 6 = . . ms *P14.42 (a) P = F H G I K J = E t mgh t m t gh Rgh (b) EL MW = 08585 10 98 87 616 5 . a fa f *P14.43 The volume flow rate is 125 16 3 096 1 2 1 cm s cm 2 3 . . F H G I K J Av v π . The speed at the top of the falling column is v 1 767 0724 10 6 . . . cm s cm cm s 3 2 . Take point 2 at 13 cm below: y v y v P Pv v 1 2 2 2 0 2 02 2 2 2 1 2 1 2 98 013 1
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