Notices
Results 1 to 5 of 5
Like Tree4Likes
  • 1 Post By Flick Montana
  • 1 Post By Strange
  • 2 Post By Daecon

Thread: New querries from my side

  1. #1 New querries from my side 
    precious sir ir r aj's Avatar
    Join Date
    Oct 2013
    Posts
    668
    My new querries


    1- How many signifcant figures are in 1000?


    2- I am in freely falling alevator , moving wih speed of gravity downwards. i have ball in my hand, if i drop it. then what will happen?


    3- Why Is There A Limit To How Cold It Gets But No Limits On How Hot it gets?
    related link: Why Is There A Limit To How Cold It Gets But No Limits On How Hot It Gets? - Find Answers to this Question


    4- Easiest way to decrease 24 hour day time (one rotation of earth about its axis) ( "reducing diameter of earth" or by "increasing/reducingspeed of rotation of earth")


    Reply With Quote  
     

  2.  
     

  3. #2  
    Life-Size Nanoputian Flick Montana's Avatar
    Join Date
    Jul 2012
    Location
    Flatland
    Posts
    5,438
    1) 1 sig fig
    2) It will fall at the same speed as you
    3) Because absolute zero is defined by the complete absence of molecular motion. You cannot have negative motion.
    4) Reset your clock?


    sir ir r aj likes this.
    "Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us." -Calvin
    Reply With Quote  
     

  4. #3  
    precious sir ir r aj's Avatar
    Join Date
    Oct 2013
    Posts
    668
    Quote Originally Posted by sir ir r aj View Post
    3- Why Is There A Limit To How Cold It Gets But No Limits On How Hot it gets?
    related link: Why Is There A Limit To How Cold It Gets But No Limits On How Hot It Gets? - Find Answers to this Question
    Quote Originally Posted by Flick Montana View Post
    3) Because absolute zero is defined by the complete absence of molecular motion. You cannot have negative motion.
    what is negative motion? new for me.
    Quote Originally Posted by sir ir r aj View Post
    4- Easiest way to decrease 24 hour day time (one rotation of earth about its axis) ( "reducing diameter of earth" or by "increasing/reducing speed of rotation of earth")
    Quote Originally Posted by Flick Montana View Post
    4) Reset your clock?
    right. ! fantastic
    Reply With Quote  
     

  5. #4  
    Brassica oleracea Strange's Avatar
    Join Date
    Oct 2011
    Location
    喫茶店
    Posts
    17,036
    Quote Originally Posted by sir ir r aj View Post
    4- Easiest way to decrease 24 hour day time (one rotation of earth about its axis) ( "reducing diameter of earth" or by "increasing/reducingspeed of rotation of earth")
    Decreasing the diameter would speed up rotation due to conservation of angular momentum (the usual example is an ice skater tucking in her arms to spin faster, then extending them to slow down) and lead to a shorter day.

    But, of course, doing that is not "easy" (even though a few million tons of dust falls on the Earth every day).
    sir ir r aj likes this.
    ei incumbit probatio qui dicit, non qui negat
    Reply With Quote  
     

  6. #5  
    Forum Professor Daecon's Avatar
    Join Date
    Jul 2013
    Location
    New Zealand
    Posts
    1,288
    Quote Originally Posted by sir ir r aj View Post
    Quote Originally Posted by Flick Montana View Post
    3) Because absolute zero is defined by the complete absence of molecular motion. You cannot have negative motion.
    what is negative motion? new for me.
    Imagine you're running along, then you slow down to a jog, then you slow down to a walk, and you keep slowing down until you get to a complete stop.

    You can't go "slower" than a complete stop, because even if you started walking backwards, you'd be moving again.

    Temperature can be measured by the speed at which atoms and molecules move and vibrate. A complete stop would be absolute zero, with no atomic movement whatsoever. You can't go slower than a complete stop, so you can't get colder than absolute zero.

    Even if the atoms and molecules started vibrating in the "opposite" direction, they'd be moving again and so develop a detectable temperature, and thus be warmer than absolute zero (not colder).

    This movement wouldn't be "negative motion" it would simply be ordinary motion.
    scoobydoo1 and sir ir r aj like this.
    Reply With Quote  
     

Similar Threads

  1. Terraforming - The Chemistry Side of It
    By Karakris in forum Chemistry
    Replies: 3
    Last Post: September 2nd, 2011, 02:08 PM
  2. Replies: 1
    Last Post: October 14th, 2009, 10:23 AM
  3. Up Side Down Pool
    By mvm2691 in forum Physics
    Replies: 16
    Last Post: October 15th, 2008, 12:59 AM
  4. Replies: 14
    Last Post: August 22nd, 2008, 07:54 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •