1. Not finding help here? Sign up for a free 30min 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!

Water Flow

  1. Dec 4, 2008 #1
    1. The problem statement, all variables and given/known data
    A horizontal pipe 10.0cm in diameter has a smooth reduction to a pipe
    5.00cm in diameter. If the pressure of the water in the larger pipe is
    8.00x10^4Pa and the pressure in the smaller pipe is 6.00x10^4Pa, at
    what rate does water flow through the pipes?

    2. Relevant equations
    A = pie(r)^2
    Kinematics equation to find velocity
    A1V1 = A2V2
    F=PA

    3. The attempt at a solution
    I got areas first
    A = pie(5.00cm)^2 = 78.5cm^2
    A = pie(2.50cm)^2 = 19.6cm^2

    Then I found F using F=PA
    F = (8.00x10^4Pa)(78.5cm^2) = 6.28x10^6N
    F = (6.00x10^4Pa)(19.6cm^2) = 1.18x10^6N

    I'm not sure what kinematics equation to use to find velocity
    Thanks,
    Kevin
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Dec 4, 2008 #2

    rl.bhat

    User Avatar
    Homework Helper

    Using Bernoulli's equation you can wright P1+1/2*p*V1^2 = P2 + 1/2*p*V2^2
    By using the equation A1V1 = A2V2 you can solve for V1 and V2
     
  4. Dec 4, 2008 #3
    I'll try it thanks
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Water Flow
  1. Flow of Water (Replies: 5)

  2. Water flow (Replies: 2)

Loading...