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: Thermal Processes

  1. Nov 30, 2005 #1
    This question is considered one of the hardest in this chapter regarding thermodynamics. I spent countless time trying to figure it out but i was never close to the answer. The question is:

    Water is heated in an open pan where the air pressure is 1atm. WAter remains a liquid but expanded by a small amount when it was heated. FIND THE RATIO OF WORK DONE BY WATER TO THE HEAD ABSOBED BY THE WATER.

    So that means:

    W / Q

    where W = P(Vf - Vi)
    but what's Q? I tried Q = cm delta T but i was wrong. if anyone can help me i'd appreciate it thanks.
     
  2. jcsd
  3. Dec 1, 2005 #2

    Tide

    User Avatar
    Science Advisor
    Homework Helper

    What is cm? Shouldn't you be using [itex]c_p[/itex]?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook