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: Penguin huddling -Heat transfer mechanisms -Radiation problem

  1. Oct 28, 2008 #1
    1. The problem statement, all variables and given/known data

    To withstand the harsh weather of the Antarctic emperor penguins huddle in groups. Assume that a penguin is a circular cylinder with a top surface area of 0.34m2 and a height of 1.1m. If penguins huddled closely to form a huddled culinder with a top surface area of Na and height h by what percentage does huddling reduce the total radiation loss compared to if 1000 seperate identical penguins radiated heat alone.


    3. The attempt at a solution

    I ended up with the solution of 85%. Can anyone verify this? I just want to see if my solution is right. I'm not looking for anyone to post the full solution just verification. Thanks guys
     
  2. jcsd
  3. Oct 29, 2008 #2
    cmon guys please help
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...