1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

What is the rate at which water flows out the tank in m^3/s?

  1. Nov 21, 2003 #1
    A tank of large area is filled with water to a depth of 0.6m. A hole of 6m^2 cross section in the bottom allows water to drain out in a continous stream. What is the rate at which water flows out the tank in m^3/s?
    This is how I figure the problem should be solved:
    Q= pi*r^4(p1-p2)/8L*viscosity

    Area= 6e-4m^2
    h= 0.6m
    P= rho*g*h= 1.00e3kg/m^3*9.8m/s^2*0.6m= 5880N/m^2
    what I can't figure out is how do I get viscosity from the area
  2. jcsd
  3. Nov 22, 2003 #2

    Doc Al

    User Avatar

    Staff: Mentor

    This kind of question probably belongs in the Homework Help section. Anyways....

    Forget viscosity. (Unless they want you to include it; in which case: Lot's of luck!) Assume laminar flow. Apply Bernoulli's principle. Hint: Since the tank has a "large area", ignore the 1/2ρV2 term at the surface.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook