Water (rho = 1000 kg/m^3) flows horizontally. At one point P = 1.5 10^5 Pa and v = 1 m/s; at another v = 4 m/s. The pressure there is:

  1. 2.85 10^5 Pa
  2. 1.43 10^5 Pa
  3. 71,200 Pa
  4. 1.43 10^6 Pa
Answer

B) 1.43 10^5 Pa

P2 = P1 + 12rho(v1^2 - v2^2) = 1.5 10^5 + 500(1 - 16) = 1.43 10^5 Pa. SLO P-11-B-40 · Application

Physics MCQ · More Fluid Statics and Dynamics MCQs · Practise