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!

Astronomy Olympiad

  1. Jan 29, 2007 #1
    Recently I gave my Astronomy Olympiad. There were some questions of descriptive type. If you all dont mind I would like to discuss them here. :rolleyes:
     
  2. jcsd
  3. Jan 29, 2007 #2

    russ_watters

    User Avatar

    Staff: Mentor

    Shoot.........
     
  4. Jan 29, 2007 #3
    Here goes the first...
    Well, if it had been a question of geometry, I would have just calculated the angle for cos-1 (6400/42400). My answer would come 81.1...

    But what I wrote is about the stability of the satellite. Will the satellite be stable at an altitude of 36000 Kilometres. What do you think??
     
  5. Jan 29, 2007 #4

    russ_watters

    User Avatar

    Staff: Mentor

    It doesn't matter if it is stable or not - it is at 36000km right now.
     
  6. Jan 30, 2007 #5
    OK :D It means I was foolish to prove that the satellite was unstable. anyways, here goes the second question:
    I think that more than 1 arrangement is possible. And the sum should always be a constant. Probably 360 degree. Whadda say? :tongue2:
     
  7. Jan 30, 2007 #6

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    I agree on the first but disagree with the second. I can make any sum from 180* to 720*.
     
  8. Jan 30, 2007 #7
    Oh very well!! thanks for that :D The third question.
    I have assumed that the shell is spherical. And the the space inside the shell is vacuum. Am I going in the right direction?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Astronomy Olympiad
  1. Basic astronomy (Replies: 1)

  2. Amateur astronomy (Replies: 10)

Loading...