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Riddle (OQ) - IPY

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onewithnature
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Re: riddle(OQ)

Unread post by onewithnature » Sat Jan 29, 2011 10:30 am

:lol: :lol:

Look deeper in ... :wink:
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Re: riddle(OQ)

Unread post by Jungle Junkie » Sat Jan 29, 2011 4:48 pm

Dry ice gives more than twice the cooling energy per pound of weight and three times the cooling energy per volume than regular water ice (H2O).

It freezes at -78.5°C :hmz:

Edit - Are we looking at a number as the answer or a substance ???

Absolute zero = -273.15°C
Last edited by Jungle Junkie on Sat Jan 29, 2011 4:59 pm, edited 1 time in total.
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onewithnature
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Re: riddle(OQ)

Unread post by onewithnature » Sat Jan 29, 2011 4:52 pm

Interesting info, JJ. :thumbs_up:

Temperature-wise, you're heading in the right direction. Now, think colder! :wink:
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Re: riddle(OQ)

Unread post by Jungle Junkie » Sat Jan 29, 2011 5:00 pm

Absolute zero = -273.15°C
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onewithnature
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Re: riddle(OQ)

Unread post by onewithnature » Sat Jan 29, 2011 5:39 pm

Almost there, JJ ... :clap: :clap: You've found the standard! So, what is twice as cold as the freezing point of water?
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Re: riddle(OQ)

Unread post by ossendryver » Sat Jan 29, 2011 5:51 pm

-546.3°C

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Re: riddle(OQ)

Unread post by onewithnature » Sat Jan 29, 2011 5:56 pm

Nope, not twice the coldness of absolute zero (this doesn't exist in reality, of course!!), but of the freezing point of water.
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Re: riddle(OQ)

Unread post by Jungle Junkie » Sat Jan 29, 2011 7:07 pm

Boiling is 373.15 k
Freezing is 273.15 k

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Last edited by Jungle Junkie on Sun Jan 30, 2011 7:14 am, edited 1 time in total.

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Re: riddle(OQ)

Unread post by Jungle Junkie » Sat Jan 29, 2011 7:12 pm

186.575 k is twice as cold as the boiling point of water
136.575 k is twice as cold as the freezing point of water
Last edited by Jungle Junkie on Sun Jan 30, 2011 7:13 am, edited 1 time in total.

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Re: riddle(OQ)

Unread post by Bushmom » Sat Jan 29, 2011 10:40 pm

Absolute zero is 0 degrees kelvin. Zero degrees centigrade is 237.15 degrees more than absolute zero, thus twice as cold as zero degrees centigrade is -136.575 degrees centigrade.
(Not sure if this is the answer to the original one or the second one :huh: :huh: )
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onewithnature
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Re: riddle(OQ)

Unread post by onewithnature » Sun Jan 30, 2011 8:05 am

Jungle Junkie, Bushmom :clap: :clap:

That's what I was looking for! The absolute standard - below which no heat exists, and so which cannot get colder - is 0 degrees Kelvin, or -273.15 degrees Centigrade. Therefore, twice as cold is indeed halfway to absolute zero from the given quantities, i.e. boiling point of water at 373.15 K and freezing point of water at 273.15 K, therefore being 186.58 K and 136.58 K respectively.

:D :D
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Re: riddle(OQ)

Unread post by ossendryver » Sun Jan 30, 2011 4:38 pm

good one

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onewithnature
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Re: riddle(OQ)

Unread post by onewithnature » Sun Jan 30, 2011 5:52 pm

:thumbs_up: Thanks for trying, OD and Bish :thumbs_up:
EVERYBODY'S TR!
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TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

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onewithnature
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Re: riddle(OQ)

Unread post by onewithnature » Wed Feb 23, 2011 6:02 pm

Place six crosses on a noughts-and-crosses (tic-tac-toe) diagram so that not one of the rows or diagonals contains three next to each other.
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Re: riddle(OQ)

Unread post by Goggo EJ » Wed Feb 23, 2011 7:31 pm

x x x

x o x

o xx o

Sorry cannot get the lines in, but I think you can see what I mean. You did not say one cross in each square!!!!!
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