IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: seanmc on June 10, 2009, 01:36:58 am

Title: physics help
Post by: seanmc on June 10, 2009, 01:36:58 am: hi anyone knows how area affects density of liquids pls an urgent ans is needed asap my exams 2day!
Title: Re: physics help
Post by: Incognito_0 on June 10, 2009, 02:34:53 am: Quote from: seanmc on June 10, 2009, 01:36:58 am
hi anyone knows how area affects density of liquids pls an urgent ans is needed asap my exams 2day!

i don't know if this answers your question but... There's this explanation in my text book:
"An expression for the pressure at depthh in a liquid of density d can be found by considering a horizontal area A. The force acting vertically downwards on A equals the weight of a liquid column height h and a cross sectional area A above it."

Mass of liquid column = hAd

Force on area (A) =10hAd
Title: Re: physics help
Post by: Triple_A on June 10, 2009, 04:03:54 am: density=mass/volume
volume=area*length

sooo if area increases,volume increases and density decreases and vice versa... :D

ryt?
Title: Re: physics help
Post by: Q80BOY on June 10, 2009, 04:18:50 am: best of luck guys !!

and remember, dont panick, its JUST an exam ;)
Title: Re: physics help
Post by: Petrol on June 10, 2009, 05:29:38 am: just a paper1 ;)
Title: Re: physics help
Post by: susman on June 10, 2009, 05:31:22 am: so how was it..
easy or hard?
plus the mods are online now..and watching...
P.s
i dont take biology
a frnd was telling the paper was leaked here?:S
Title: Re: physics help
Post by: nid404 on June 10, 2009, 05:50:32 am: if uve done the past-papers the exam will be a piece of cake for u. EXCELLENT PAPER!!! ;D
Title: Re: physics help
Post by: susman on June 10, 2009, 05:53:06 am: thanks bro..
currently doing 93-95:D

will also revise from 00 to 08
Title: Re: physics help
Post by: nid404 on June 10, 2009, 07:27:18 am: Quote from: answers on June 10, 2009, 07:25:49 am
Its on a different site...not even on student forums!!!

so its fine :)

no dear it's not. LAST TIME ARE U DELETING IT OR NOT. I just want a yes or no. I know what i have to do next
Title: Re: physics help
Post by: nid404 on June 10, 2009, 07:58:18 am: Quote from: answers on June 10, 2009, 07:55:13 am
no dear..

LAST TIME ARE YOU GONNA STOP PISSING ME OFF FOR HELPING PEOPLE!

IT"S NOT HELPING....HAHA..

And ull be out of the forum in sometime so i'll piss u for whatever wrong uve done. So adamant...could have apologized and deleted the posts..u didn't, so face this
Title: Re: physics help
Post by: Incognito_0 on June 10, 2009, 02:32:22 pm: Quote from: susman on June 10, 2009, 05:31:22 am
so how was it..
easy or hard?
plus the mods are online now..and watching...
P.s
i dont take biology
a frnd was telling the paper was leaked here?:S
It was a little tricky but still good :D