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

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: mr_scholes on June 08, 2009, 03:07:31 pm

Title: Answer to milk question in p3 physics
Post by: mr_scholes on June 08, 2009, 03:07:31 pm: check this out
(http://img26.imageshack.us/img26/2861/59659599.jpg)
Title: Re: Answer to milk question in p3 physics
Post by: qwert101 on June 08, 2009, 03:08:52 pm: what i said :D
Title: Re: Answer to milk question in p3 physics
Post by: -_- on June 08, 2009, 03:12:28 pm: Me Too :)

Thanks
Title: Re: Answer to milk question in p3 physics
Post by: molii on June 08, 2009, 03:23:26 pm: i still dont get it... :s

???

anyone help??
Title: Re: Answer to milk question in p3 physics
Post by: -_- on June 08, 2009, 03:27:28 pm: Quote from: sugarnspice14 on June 08, 2009, 03:23:26 pm
i still dont get it... :s

???

anyone help??
When it is covered by a damp cloth, Water gains K.E and so can over come the forces of attraction, causing it to evaporate, and evaporation has a cooling effect (You Should Know This) thus keeping the Milk inside cool for a further period of time :)

Hope It Helps, If It Does, Don't Forget +REP ;)
Title: Re: Answer to milk question in p3 physics
Post by: 7ooD on June 08, 2009, 03:50:30 pm: oh i wrote that water have k.e and transfer it to other molecules and thus transfer the k.e to the milk bottle by convection
Title: Re: Answer to milk question in p3 physics
Post by: 7ooD on June 08, 2009, 03:51:40 pm: By the way i cant open the picture is there is a link for it and lol man where did u get the question from
Title: Re: Answer to milk question in p3 physics
Post by: mr_scholes on June 08, 2009, 04:10:03 pm: Quote from: 7ood on June 08, 2009, 03:51:40 pm
By the way i cant open the picture is there is a link for it and lol man where did u get the question from

lol i have my ppl :P
Title: Re: Answer to milk question in p3 physics
Post by: IG DUDE on June 08, 2009, 04:12:23 pm: Quote from: 7ood on June 08, 2009, 03:51:40 pm
By the way i cant open the picture is there is a link for it and lol man where did u get the question from
right click on it
Title: Re: Answer to milk question in p3 physics
Post by: 7ooD on June 08, 2009, 04:15:14 pm: omg!!! they repeated 3 question now in this exam this question and the pressure question and the truck question hey which mcq was this question repeated the milk one
Title: Re: Answer to milk question in p3 physics
Post by: idk on June 08, 2009, 05:24:36 pm: hey guys i wrote that the milk molecules cant evaporate as damp cloth is there and that the milk will transfer its heat energy to water and water evaporates instead of milk and thus milk stays cool.is this right?
Title: Re: Answer to milk question in p3 physics
Post by: guru007 on June 09, 2009, 06:17:41 am: Quote from: sugarnspice14 on June 08, 2009, 03:23:26 pm
i still dont get it... :s

???

anyone help??

Hey everyone,

It was a little bit similar to the thermos flask right????
Title: Re: Answer to milk question in p3 physics
Post by: thukon on June 09, 2009, 06:58:53 am: I got it wrong. I wrote that water evaporates from the dish. lol. I thought the cloth was to stop the milk from evaporating.
Will I get ANY marks for that??
Title: Re: Answer to milk question in p3 physics
Post by: angell on June 09, 2009, 07:16:31 am: this mcq is from the m/j 2001 paper 1
Title: Re: Answer to milk question in p3 physics
Post by: wildrider on June 09, 2009, 07:28:30 am: the image looks like a paper 1 question
Title: Re: Answer to milk question in p3 physics
Post by: molii on June 09, 2009, 08:41:18 am: Quote from: Devil93 on June 08, 2009, 03:27:28 pm
Quote from: sugarnspice14 on June 08, 2009, 03:23:26 pm
i still dont get it... :s

???

anyone help??
When it is covered by a damp cloth, Water gains K.E and so can over come the forces of attraction, causing it to evaporate, and evaporation has a cooling effect (You Should Know This) thus keeping the Milk inside cool for a further period of time :)

Hope It Helps, If It Does, Don't Forget +REP ;)

it helpd.. :)
+REP.. ;D

thnku!