Welcome to BrainDen.com - Brain Teasers Forum
|Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.
Of course, you can also enjoy our collection of amazing optical illusions and cool math games.
If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.
Thanks and enjoy the Den :-)
Amount of air in a glass
Posted 06 July 2014 - 01:32 PM
If we have an emty cylindrical glass on a flat table with a dice inside it , naturally, it will contain an amount of air inside it.
Now , if we invert this glass upside down on the table, leaving the dice still inside it but landing on the table , will the amount of air inside the glass changes?
If yes, would it be more or less, and why?
Posted 07 July 2014 - 01:35 PM
Normally, I would say that the dice are just a red herring to confuse us - BUT - I think they are of some significance!
Posted 03 October 2014 - 07:46 PM
The amount of gas in vessel depends on three factors - the volume of the container, the gas temperature and pressure.
In our case the volume and temperature are not changing. The pressure changes.
As known the air pressure decreases with increasing distance from the ground. In the first glass position the pressure therein - P1 is the average betwin Pb - bottom pressure and Pt - glass top pressure. In the second - P2 = Pb , because this is the only level of interconnected spaces.
Since P2>P1 the amount of air in the second position will be more.
Oh! we have not given explanation regarding dice... This is to the author because it has nothing to do with this puzzle.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users