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08-15-2008, 01:23 AM
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In a classroom there are 25 benches one behind another


a student in first bench releases laughing gas and
a student in last bench releases tear gas now


the student in middle will laugh or cry first



waiting for ans n reason too

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08-16-2008, 01:22 AM #2
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He will neither laugh nor cry cause both the gases wont reach him
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08-17-2008, 06:17 AM #3
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Quote:
Originally Posted by chiru39 View Post
He will neither laugh nor cry cause both the gases wont reach him
thats not he will do one oh the things thats but y do u say the gases wont reach
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08-18-2008, 05:59 AM #4
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it depends on the direction of air flow, if the air flow is towards backside then he laughs, if it is towards front side then he cries.
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08-18-2008, 11:22 AM #5
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it depends on the direction of air flow, if the air flow is towards backside then he laughs, if it is towards front side then he cries.
I too agree wid pari.......
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08-18-2008, 08:22 PM #6
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are the windows open?
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08-19-2008, 09:11 AM #7
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Originally Posted by kishlu View Post
I too agree wid pari.......
there is no powerful wind blow to divert the gasaes
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08-19-2008, 10:29 AM #8
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Quote:
Originally Posted by mohan636143 View Post
there is no powerful wind blow to divert the gasaes

mohan gases always tends to flow towards the direction of air flow, we dint say wind, there is lot of difference in air and wind, so both the gases flow in same direction if they flow towards front then the student cries if they flow towards back the student laughs thats the funda, hope u understood
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07-04-2009, 05:08 PM #9
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its good
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07-05-2009, 02:38 AM #10
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the student in the middle will laugh...
laughing gas is Nitrous oxide(N2O)... molecular weight = 44
tear gas is C10H5ClN2... molecular weight = 191

Assuming same pressure in the room laughing gas will travel faster than tear gas
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