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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Fluids: Diff between gases and liquids
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naveen_nvn (108)

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kk if its fully filled mayb it wont...but as i told pressure shud b zero...and it will tend 2 the sphere shape even if a slight possibilty thr..
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nee.agl (20)

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but what abt in the case of gases?
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utkarshsinha (15)

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8-|

So will the liquid exert a pressure or not? and what abt the gas??

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naveen_nvn (108)

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no lol...more the discussion more confusing tis getting... but no pressure as nee said
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nee.agl (20)

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liquied will NOT exert pressure..
but still confused abt gases.. i think it ll.. because of PV = nRT
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naveen_nvn (108)

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k suppose gas exerts pressure...then thr is a force on the wall of bottle but no opposing force 2 counterbalance it as gravity =0...so bottle cannot stay in equilibruim wid gas...so i dont think gas also exerts press..
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utkarshsinha (15)

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ok.... @nee.agl: if i fill more liquid than the volume of the container? will it still not exert some pressure?

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nee.agl (20)

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if u fil in more than container's vol then the container will burst... :P
we assuming ideal liquids.. n ideal are incompressible... :)
ALL HAIL THE IDEAL
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@nee.agl: accepted.

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nee.agl (20)

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Long Live the IDEAL concept...
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naveen_nvn (108)

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glad... :)
jus hope i didnt confuse u srry...firstly i didnt c gravity free space nd wen i realised tht i didnt c fully filled lol...srry
but wen its not fully filled i think my explanation of sphere thingi will hold...
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Nithy (400)

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no pressure will be exerted on the walls at all as weightless, no gravity.
this is in case of both water and hydrogen.  the vessel will remain stationary and the fluid inside it will be inside vesell  assuming shape of vessel only.
 
Defenitely not  spherical! come off it, there is  no surface tension!
 
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Nithy (400)

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for both hydrogen and water:
 
any fluid will remain inside the container when in space, in the same shape as that of container.
 
will not exert any force on the wall as weighlessness is experienced.
 
come off it, there is no surface tension and how can it assume spherical shape??

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utkarshsinha (15)

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Why no surface tension??

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