Author |
Topic: cork bottle coin (Read 1277 times) |
|
karan_sikka1
Newbie
Posts: 2
|
 |
cork bottle coin
« on: May 6th, 2004, 12:46am » |
 Quote  Modify
|
i think the answer to it is that you heat the bootle so that the cork will come out due to pressure.here you r not opening the cork on your own but due to pressure as in shampign.so after the cork is removed u can .............
|
| « Last Edit: May 6th, 2004, 4:41pm by Icarus » |
 IP Logged |
|
|
|
evergreena3
Full Member
  
Gender: 
Posts: 192
|
|
Re: cork bootle coin
« Reply #1 on: May 6th, 2004, 6:10am » |
Quote Modify
|
Karen,
Please post the question. Thanks!
EverGreenA3
|
|
IP Logged |
You're welcome! (get it?)
|
|
|
Sameer
Uberpuzzler
Pie = pi * e
Gender:
Posts: 1261
|
|
Re: cork bootle coin
« Reply #3 on: May 6th, 2004, 7:24am » |
Quote Modify
|
And isn't there a thread alreayd on this?
|
|
IP Logged |
"Obvious" is the most dangerous word in mathematics.
--Bell, Eric Temple
Proof is an idol before which the mathematician tortures himself.
Sir Arthur Eddington, quoted in Bridges to Infinity
|
|
|
Three Hands
Uberpuzzler
Gender:
Posts: 715
|
|
Re: cork bootle coin
« Reply #5 on: May 6th, 2004, 11:38am » |
Quote Modify
|
Karan, I'd have thought that pushing the cork into the empty bottle would be easier, require less preparation, and take less time...
Not that your answer doesn't show a bit more ingenuity, of course 
|
|
IP Logged |
|
|
|
evergreena3
Full Member
Gender:
Posts: 192
|
|
Re: cork bootle coin
« Reply #6 on: May 6th, 2004, 1:18pm » |
Quote Modify
|
Yeah, I thought to push the cork into the bottle, too.
|
|
IP Logged |
You're welcome! (get it?)
|
|
|
towr
wu::riddles Moderator
Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730
|
|
Re: cork bootle coin
« Reply #7 on: May 6th, 2004, 1:23pm » |
Quote Modify
|
You could just melt the glass
Or cut it (cutting isn't breaking)
|
|
IP Logged |
Wikipedia, Google, Mathworld, Integer sequence DB
|
|
|
Speaker
Uberpuzzler
Gender:
Posts: 1118
|
|
Re: cork bottle coin
« Reply #8 on: May 10th, 2004, 7:13pm » |
Quote Modify
|
I like heating the bottle. This way you do not need to touch the cork. So, by changing the question we could make it a little harder. I like this new answer, very nice karan. 
|
|
IP Logged |
They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. <Ben Franklin>
|
|
|
rmsgrey
Uberpuzzler
  
Gender:
Posts: 2874
|
|
Re: cork bottle coin
« Reply #9 on: May 11th, 2004, 3:53am » |
Quote Modify
|
It's possible to extract the coin without doing anything to the apparatus - get a friend to do it - or leave it over a hole with an powerful magnet below and wait for the coin to fall through the glass...
|
|
IP Logged |
|
|
|
Speaker
Uberpuzzler
Gender:
Posts: 1118
|
|
Re: cork bottle coin
« Reply #10 on: May 11th, 2004, 7:51pm » |
Quote Modify
|
To have the coin fall through the glass, are you using the properties of the glass as a liquid. Because if you are, then maybe the magnet (as opposed to gravity) would only shorten your wait by a very short time. If you wait long enough the coin will sink into and then out of the glass.
|
|
IP Logged |
They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. <Ben Franklin>
|
|
|
towr
wu::riddles Moderator
Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730
|
|
Re: cork bottle coin
« Reply #11 on: May 12th, 2004, 12:26am » |
Quote Modify
|
You'd have to wait very very long. Glass is[e]n't[e] very viscous, much [e]less more so[/e] than popular myths suggest. Chances are the coin will never 'sink through' the glass.
|
| « Last Edit: May 12th, 2004, 2:48am by towr » |
IP Logged |
Wikipedia, Google, Mathworld, Integer sequence DB
|
|
|
rmsgrey
Uberpuzzler
Gender:
Posts: 2874
|
|
Re: cork bottle coin
« Reply #12 on: May 12th, 2004, 2:31am » |
Quote Modify
|
I think the properties vary depending on the glass. Besides, if you create a deep enough potential well nearby, you develop an appreciable chance of quantum tunneling. Of course, by that point, you've probably given the coin enough energy to punch its way out through the glass anyway...
But if you're willing to wait (and the bottle survives long enough), sooner or later the coin will pass out of the bottle. The reason for the magnet is to try and increase the pressure on the coin without affecting the rest of the bottle.
Of course, all of this is needlessly complicated. All you need to do is redefine your references system so that what was previously "inside" the bottle is now "outside"...
[edit] Upon rereading, Towr surely meant to say that glass is very viscous - low viscosity fluids such as air don't do much to prevent denser objects sinking (or less dense objects rising)[/edit]
|
| « Last Edit: May 12th, 2004, 2:35am by rmsgrey » |
IP Logged |
|
|
|
towr
wu::riddles Moderator
Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730
|
|
Re: cork bottle coin
« Reply #13 on: May 12th, 2004, 2:44am » |
Quote Modify
|
on May 12th, 2004, 2:31am, rmsgrey wrote:| [edit] Upon rereading, Towr surely meant to say that glass is very viscous - low viscosity fluids such as air don't do much to prevent denser objects sinking (or less dense objects rising)[/edit] |
|
What I meant is that glass has a very high resistance to flow (despite it not being crystaline)
Frankly I was just guessing at what viscous meant
Anyway..
If you use an electromagnet with a high frequency the coin might get hot enough to melt through the glass..
|
| « Last Edit: May 12th, 2004, 2:46am by towr » |
IP Logged |
Wikipedia, Google, Mathworld, Integer sequence DB
|
|
|
Cathos
Full Member
Carpe Canum
Gender:
Posts: 246
|
|
Re: cork bottle coin
« Reply #14 on: May 12th, 2004, 12:03pm » |
Quote Modify
|
Funny this should be brought up - A freind of mine posed a riddle to me yesterday, reffering to glass as a liquid. I told him the riddle was incorrect, glass was a solid. I was always told it was an amorphous solid, as opposed to a crystaline one, and that allowed it warp or "flow" after a while. So which is it? I'm sure there are much more learned minds out here that could set the record straight. I seem to remember something about this in posts long ago, I thought it was Icarus or Towr who posted it, but I don't remember where.
|
|
IP Logged |
Sum Arbor
|
|
|
towr
wu::riddles Moderator
Uberpuzzler
Some people are average, some are just mean.
Gender:
Posts: 13730
|
|
Re: cork bottle coin
« Reply #15 on: May 12th, 2004, 12:19pm » |
Quote Modify
|
For general information http://en.wikipedia.org/wiki/Glass
And whether it flows, specifically http://en.wikipedia.org/wiki/Glass#Does_glass_flow? (same page, but further down)
|
| « Last Edit: May 12th, 2004, 12:19pm by towr » |
IP Logged |
Wikipedia, Google, Mathworld, Integer sequence DB
|
|
|
Cathos
Full Member
Carpe Canum
Gender:
Posts: 246
|
|
Re: cork bottle coin
« Reply #16 on: May 12th, 2004, 8:35pm » |
Quote Modify
|
Ah, just as I thought. Thanks for the info.
|
|
IP Logged |
Sum Arbor
|
|
|
|
RIDDLES SITE
WRITE MATH!
Home 
Help 
Search 
Members 
Login 
Register
Reply
Notify of replies
Send Topic
Print