Water leaks through a small hole 20 m below the surface of an open tank. The speed of efflux is (g = 9.8):

  1. 28 m/s
  2. 9.9 m/s
  3. 39.6 m/s
  4. 19.8 m/s
Answer

D) 19.8 m/s

Torricelli's theorem (from Bernoulli): v = 2gh = 2(9.8)(20) = 19.8 m/s. SLO P-11-B-40 · Application

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