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!

Homework Help: Velocity at ends of tube

  1. Sep 24, 2007 #1
    A siphon has been started, fluid is now flowing through it. What is the velocity at the top
    of the tube in relation to the velocity of the exiting fluid:
    (a) The velocity is greater at the top
    (b) The velocity is less (but not zero) at the top
    (c) The velocity is zero at the top
    (d) The velocity is the same at the bottom

    i'm not sure about this question...would anyone be able to explain the answer to me

  2. jcsd
  3. Sep 24, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper

    No fluid is lost or created in the tube so the volume flowing in must equal the amount flowing out. If the size of the tube doesn't change what does this mean for the speed.

    Unless this is a trick question - velocity is a vector it has magnitude and direction so walking north has a velocity of say 4mph north or -4mph south. I suspect that the word velocity was just misused in the question.
  4. Sep 24, 2007 #3
    Therefore that makes the answer d then ?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook