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Physics paper 6 2012 + chemistry paper 2 2012 discussions

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guys i do not understand what a ray box experiment is??neither what these pins r for...can some one plz help me????plz itz rly urgent...u will be blessed....
 
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ok when they ask u for putting pins on a ray they must be 5 or more cm apart in any place on the ray but 5or more cm apart if they ask u whydo we view bases of the pins u say that "the pins may not be vertical " if they say how to increase accuracy of ray diagrams then just say
use more pins
keep pins further apart
view bases of the pins that is all :) hope it helped
thanks alot ur sure a great help :) god bless you
 
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thx a lot.!!!!!!but if they ask us to design an experiment which shows that light rays are refracted what should we do??it was one of the questions i got fom a book!
 
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guys i do not understand what a ray box experiment is??neither what these pins r for...can some one plz help me????plz itz rly urgent...u will be blessed....
i don't either i just learn the precautions and that is it
 
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thx a lot.!!!!!!but if they ask us to design an experiment which shows that light rays are refracted what should we do??it was one of the questions i got fom a book!
bring a laser and a glass box then turn on the laser and observe the ray's pass and angles
 
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more notes ;)
 

Attachments

  • Chem(o)(1) Notes - studyguidepk.pdf
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  • Chem(o)(2) Notes - studyguidepk.pdf
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1 question plzz..!
veneva dey ask us to measure something with d ruler :p m9 alwayz turns out to be wrong...soo pllzzz tell me wat should i do..!!
check out http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s07_qp_6.pdf dis ppr...!!
question num 4..all m measurements r wrong..!!!
plzzz help..!!
Question 4 doesn't ask you to measure anything, all it asks you do is
  • Calculate 'f/m' using the formula
  • Find the average of the 'f/m'
  • Write down 2 precautions
  • Draw the image portrayed
 
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arrray sorry...i gave d rong ppr..!! :p
sorry its anodr ppr
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w07_qp_6.pdf dis is d ppr..
question no 4...plzz..!!!
I'm assuming that you have the printed copy of this past paper?
The printed copy might not be 100%

Are you using windows/mac to print your pastpapers (or do you have the booklet?)
Anyway, you can also measure using your computer.
Go to http://pective.com/pic/metric-ruler
Take a snapshot inside your computer, post it paint.
Open the paper to 100%
Take a picture of the paper and align it to the ruler.

phyhelp.jpg
You see, it is (almost) accurate. In IGCSE you'll get proper printed copies so there will not be a problem measuring it.
(If you have different problem then ignore the above text ^)
 
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If you print past papers from a PDF, make sure you set the print size to "Actual Size" for measurements.
 
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I'm assuming that you have the printed copy of this past paper?
The printed copy might not be 100%

Are you using windows/mac to print your pastpapers (or do you have the booklet?)
Anyway, you can also measure using your computer.
Go to http://pective.com/pic/metric-ruler
Take a snapshot inside your computer, post it paint.
Open the paper to 100%
Take a picture of the paper and align it to the ruler.

View attachment 11221
You see, it is (almost) accurate. In IGCSE you'll get proper printed copies so there will not be a problem measuring it.
(If you have different problem then ignore the above text ^)
:D:D:DD: thanku sooo much...!!!
yes it was a printing prob nly..!!!!
 
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fractioning_column1.jpg
 
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more resources more more more o_O(y)
 

Attachments

  • polymers_revision.gif
    polymers_revision.gif
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  • bonding_revision_map.pdf
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  • isotopes_revision_map.pdf
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  • atoms_revision_map.pdf
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  • tests_for_ions.doc
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  • acids_and_alkali_revision.doc
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  • organic_revision_map.doc
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