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Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 231073 times)

Offline haris94

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1680 on: May 26, 2010, 08:44:57 am »
Quote from: princess12 on May 26, 2010, 08:42:16 am
CHEMISTRY PAPER 3  ON 7 JUNE 2010

wow!! looooong break.......nice......enjoy it while u can  ;)
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Offline Raywin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1681 on: May 26, 2010, 08:48:51 am »
Hmmm... physics was pretty good but need to discuss it .... :) 
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Offline WARRIOR

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1682 on: May 26, 2010, 08:51:35 am »
Quote from: Raywin on May 26, 2010, 08:48:51 am
Hmmm... physics was pretty good but need to discuss it .... :) 
lucky you have mornin exam !!!

i have to wait till 3:30 in the afternoon to do a 45 minut exam =.=
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Offline 8T

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1683 on: May 26, 2010, 08:54:39 am »
Hello.
Can i please get help with may june 03 paper 3 q 4 b
I know how but in the mark scheme it says 6.4 * 10 ?
Could sum1 explain..
Thanks in advance.
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Offline Raywin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1684 on: May 26, 2010, 08:58:07 am »
Quote from: Kimo Jesus on May 26, 2010, 08:51:35 am
lucky you have mornin exam !!!

i have to wait till 3:30 in the afternoon to do a 45 minut exam =.=

LOL... yeah im lucky i guess.. and GOOD LUCK !! :)
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holtadit

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1685 on: May 26, 2010, 09:02:16 am »
Quote from: 8T on May 26, 2010, 08:54:39 am
Hello.
Can i please get help with may june 03 paper 3 q 4 b
I know how but in the mark scheme it says 6.4 * 10 ?
Could sum1 explain..
Thanks in advance.


(2.0 * 10^5 ) * 80cm^3 = x Pa * (25 cm^3 )

Now solve for X and you'll get the answer
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Offline princess12

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1686 on: May 26, 2010, 09:03:32 am »
which paper u attached can i get the markscheme
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Offline WARRIOR

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1687 on: May 26, 2010, 09:04:29 am »
Quote from: Ari Ben Canaan on May 26, 2010, 08:58:50 am
Can someone please explain :


Question 2 C ii

Paper is attached. :)

lol in physics doubts :P?

ok  

yeast can only work in absence of OXYGEN !..because of anaerobic respiration
also oxygen should not be present to prevent ehtanol oxidation to ehtanoic acid which wil kill the yeast
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NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline 8T

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1688 on: May 26, 2010, 09:06:46 am »
Quote from: Ari Ben Canaan on May 26, 2010, 09:02:16 am

(2.0 * 10^5 ) * 80cm^3 = x Pa * (25 cm^3 )

Now solve for X and you'll get the answer
Ari, i said i know what to do therefore i did that & i got 640000 and in the ms it says 6.4 * 10
Thts where i need help (:
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Offline Ghost Of Highbury

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1689 on: May 26, 2010, 09:08:13 am »
Quote from: Ari Ben Canaan on May 26, 2010, 09:05:31 am

Sorry WRONG PAPER !!!!!


Q2   C ii


2c doesnt exist
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Offline WARRIOR

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1690 on: May 26, 2010, 09:09:26 am »
Quote from: A@di on May 26, 2010, 09:08:13 am
2c doesnt exist
it was scarred of you and ran away :P
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NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

holtadit

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1691 on: May 26, 2010, 09:09:56 am »
WRONG PAPER AGAIN !!! (STUPID ME)

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Offline haris94

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1692 on: May 26, 2010, 09:10:35 am »
Quote from: 8T on May 26, 2010, 09:06:46 am
Ari, i said i know what to do therefore i did that & i got 640000 and in the ms it says 6.4 * 10
Thts where i need help (:

the unit given in the question for pressure is Pa (N/m2)
so try changing the cm3 to m3 and see if u get it
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Offline Raywin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1693 on: May 26, 2010, 09:12:08 am »
Quote from: Ari Ben Canaan on May 26, 2010, 08:58:50 am
Can someone please explain :


Question 2 C ii

Paper is attached. :)

Its because only when there is ANaerobic respiration (absence of o2), the result will be ethanol.
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Offline WARRIOR

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1694 on: May 26, 2010, 09:13:24 am »
Quote from: Ari Ben Canaan on May 26, 2010, 09:09:56 am
WRONG PAPER AGAIN !!! (STUPID ME)


VELOCITY HAS DIRECTION !

SO AT THE BEGING THE SPEED WAS  + 9m/s AND THEN IT TURNED ANOTHER DIRECTION AND GAINED SPEED ( since its in anothe rdirection it willl be -8m/s

                                    

SO WHAT IS THE DIFFRENCT

+9 - ( -8)

17 right?
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NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa
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