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!

New problem

  1. Oct 22, 2007 #1
    new problem!!

    A pumped-storage reservoir sits 136 m above its generating station and holds 9.0×10^9 kg of water. The power plant generates 346 MW of electric power while draining the reservoir over an 6.9 h period.
    What fraction of the initial potential energy is lost to nonconservative forces (i.e., does not emerge as electricity)?

    could you please guys help me with that? I gave up with that
    I need that in hour guys please please.
  2. jcsd
  3. Oct 22, 2007 #2


    User Avatar
    Homework Helper

    136 m above its generating station and holds 9.0×10^9 kg. so what is the gravitational potential energy?

    346 MW over an 6.9 h... what is the energy generated here?

    so how much energy is lost?

    what is the fraction of this energy to the original gravitational potential energy.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: New problem
  1. A new force problem! (Replies: 3)

  2. New problem (Replies: 1)

  3. F= MA problem (new) (Replies: 3)