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Author Topic: ALL CIE PHYSICS DOUBTS HERE !!!  (Read 171669 times)

Offline °o.O-hash94-O.o°

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #705 on: May 22, 2011, 03:56:32 pm »
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Offline EMO123

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #706 on: May 22, 2011, 04:10:53 pm »
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Offline aneeta

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #707 on: May 22, 2011, 04:37:00 pm »
Can someone please explain to me how to draw a wave with a certain phase difference according to the wave already given in the question? =/ please.
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Offline SkyPilotage

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #708 on: May 22, 2011, 06:20:44 pm »
Quote from: aneeta on May 22, 2011, 04:37:00 pm
Can someone please explain to me how to draw a wave with a certain phase difference according to the wave already given in the question? =/ please.
I guess you got that question from June 2010 P23 :D
Well you gotta know that one wave phase difference is 360..half is 180...quarter is 90 soo its rlly just approximations in the draawing...And they werent very picky in the marking scheme either...
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Offline leebux101

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #709 on: May 22, 2011, 06:28:04 pm »
Quote from: TJ-56 on May 22, 2011, 03:18:32 pm
October November 2010 Paper 51 question 1: the question says that the coil y is tightly winded around coil x, but the diagram required by the mark scheme says 'two independent coils labeled X and Y'. So what is the correct and acceptable drawing here? One tube with both coils and just labeling the 2?
Thanks for any help in advance.
yes as long as u label them both, i suggest to draw with different coloured inks.  :)
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Offline SkyPilotage

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #710 on: May 22, 2011, 06:30:36 pm »
Quote from: °o.O-hash94-O.o° on May 22, 2011, 03:56:32 pm
pls can anyone answer the question no 2 from following paper...
http://www.xtremepapers.me/CIE/International%20A%20And%20AS%20Level/9702%20-%20Physics/9702_w10_qp_21.pdf
Part I)
Resolve the velocity into its vertical adn horizontal components...Meaning draw an arrow down adn to the right and you have an angle of 60 degress and you will have to use tan(v/8.2) Man it would bee easier if I had a scanner  :-\

Part II)
since its thrown horizontally the initaila speed is 0 and the accelerration is 9.81 and final velocity is 14.2..So use the formula s=ut + 0.5(a)t^2
Part III)
horizontal speed is constant when there is no air resistance soo x= speed x time.... To find the time we can use the vertical component of velocity using v=u+at where v= 14.2 and u=0 and a=9.81 soo t=14.2/9.81.......Multiplay the answer by the horizontal component(8.2) to get the distance.....
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Offline TJ-56

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #711 on: May 22, 2011, 06:33:05 pm »
Quote from: leebux101 on May 22, 2011, 06:28:04 pm
yes as long as u label them both, i suggest to draw with different coloured inks.  :)

Thanks for the reply. I don't think they would accept any diagrams drawn with anything other than a soft pencil, so I though about it and I think its best that we draw them and label them (using the same pencil), and on the side of the diagram we should state that the 2 circuits are not connected together.
« Last Edit: May 22, 2011, 06:36:53 pm by TJ-56 »
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Offline Vin

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #712 on: May 22, 2011, 07:12:22 pm »
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Offline Vin

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #713 on: May 22, 2011, 07:17:12 pm »
couple of stupid questions, but i idc

http://www.freeexampapers.com/get_past_papers.php?l=Past_Papers%2FA+Level%2FPhysics%2FCIE%2F2009+Jun%2F9702_s09_qp_2.pdf

Q1 a . why not vernier calliper? It can measure 1 mm alright. (its not mentioned in the mark scheme)

Q 5 b. how'd you get the path difference at 28?

Q 7 b iii)
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Offline SkyPilotage

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #714 on: May 22, 2011, 08:04:59 pm »
Quote from: Vin on May 22, 2011, 07:12:22 pm
http://www.freeexampapers.com/get_past_papers.php?l=Past_Papers%2FA+Level%2FPhysics%2FCIE%2F2008+Jun%2F9702_s08_qp_2.pdf

Q6 b)

suchan easy question i dont get it

coming up with few more in 2.
Use the formula P=v^2/R
Am sure you will be able to do it...Emo explained it a couple of pages back :D
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Offline SkyPilotage

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #715 on: May 22, 2011, 08:07:24 pm »
Quote from: Vin on May 22, 2011, 07:17:12 pm
couple of stupid questions, but i idc

http://www.freeexampapers.com/get_past_papers.php?l=Past_Papers%2FA+Level%2FPhysics%2FCIE%2F2009+Jun%2F9702_s09_qp_2.pdf

Q1 a . why not vernier calliper? It can measure 1 mm alright. (its not mentioned in the mark scheme)

Q 5 b. how'd you get the path difference at 28?

Q 7 b iii)
-Just stick to micrometer :)
-Distancew travelled by S1 is 100 cm and distance travelled by s2 is hypotuneus which is 128 cm... Path difference is 28 cm
-between A and Z you have two R resistors and 2 more R is parallel..Treat the 2 R as one resistor or 0.5 R sooo Total Resistance is R+R+0.5R=5/2R
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Offline SkyPilotage

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #716 on: May 22, 2011, 08:21:23 pm »
Is deviation of particles in a magnetic field perpendicular to the magnetic field lines??? How do we know the direction of deviation?? How do we use the fleming rule??
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Offline aneeta

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #717 on: May 22, 2011, 08:53:08 pm »
Any tips for tomorrows exam? =/
Good luck everyone that's sitting an exam tomorrw :) x
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Offline Arthur Bon Zavi

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #718 on: May 22, 2011, 09:06:36 pm »
Quote from: aneeta on May 22, 2011, 08:53:08 pm
Any tips for tomorrows exam? =/
Good luck everyone that's sitting an exam tomorrw :) x

Don't leave your paper blank. That's all. :P ::)
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Offline leebux101

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Re: ALL CIE PHYSICS DOUBTS HERE !!!
« Reply #719 on: May 22, 2011, 10:38:57 pm »
Quote from: TJ-56 on May 22, 2011, 06:33:05 pm
Thanks for the reply. I don't think they would accept any diagrams drawn with anything other than a soft pencil, so I though about it and I think its best that we draw them and label them (using the same pencil), and on the side of the diagram we should state that the 2 circuits are not connected together.
i dont understand. y wudnt they accept diagrams drawn in stuff other than a pencil , the isnstructions state that >> u may use a pencil for any diagrams.
that means that its ok to draw in stuff other than a pencil. what do u think?
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