Water flows at 2 m/s through a pipe at pressure 1.5 10^5 Pa. The pipe rises 5 m with no change in area. The pressure at the top is (rho = 1000 kg/m^3, g = 9.8):

  1. 1.48 10^5 Pa
  2. 1.99 10^5 Pa
  3. 1.5 10^5 Pa
  4. 1.01 10^5 Pa
Answer

D) 1.01 10^5 Pa

Speed unchanged, so P2 = P1 - rho g h = 1.5 10^5 - 4.9 10^4 = 1.01 10^5 Pa. SLO P-11-B-40 · Application

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