Physics paper 6 2012 + chemistry paper 2 2012 discussions

[IGCSE1234]

guys plz help
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s07_qp_6.pdf
Q4 a (ii) !!

o.149

 

[dana xP]

o.149

yes i know ,,,, but y ??

 

[white rose]

Well I wanted to ask about the best fit line graphs and straight line graphs, in some Questions the points are scattered and it says to make the best fit line so do we have to make a curve or straight line joining 3 points and leaving 2 behind ? it keeps puzzling me :/

best fit means, making a straight line which passes through most points.

 

[IGCSE1234]

yes i know ,,,, but y ??

if u add both focal lenghts and divide be 2 u will get this answers

 

[IGCSE1234]

people say v2 was great isa v1 will be too

 

[ahmed99]

done with p 6 v2

 

[aliqamar1995]

best fit means, making a straight line which passes through most points.

Thanks But you didn't reply on time but I did the graph right Thanks anyways !

 

[aliqamar1995]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w04_qp_3.pdf
Help !! Q6. part b, ! Please

 

[IGCSE1234]

done with v1 paper 6 and it was hard
no time to chat about have to solve solve solve

 

[IGCSE1234]

people who did v1 how do u think it was i thought it was bad

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Assalam-o-alaikum wr wb..
i found it REALLY easy Alhamdulillah

 

[IGCSE1234]

Assalam-o-alaikum wr wb..
i found it REALLY easy Alhamdulillah

i found the graph hard

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

i found the graph hard

what exactly did you find hard?!

 

[dana xP]

ummmmmmm guys can any body help me plz ?
i want a convincing anwer to 'use the kinetic theory to explain the process of diffusion' !!

 

[ramza]

notes for AS physics and AS chemistry

 

[silverstar]

Drawing graphs:
• Label axis
• Choose a proper scale
• Well judged best fit line
• Thin and neat lines
Measuring the gradient:
• Draw a triangle on graph
• Use clear lines
• Triangle must be larger than half the line
Sources of error in calculating circumference by string method:
• Parallax
• Diagonal winding
• Thickness of string
Improvement made to calculating circumference by string method
• Avoid parallax error
• Repeats and average
• Thinner string
• Parallel winding of springs
It's not the BEST list in the world, but hopefully it will help...
Control Variables
Precautions
Units ( eg.. voltage is V etc. ) cause the units hold 1 mark of the question
Statements & justification
The rest are calculations and measurements which are easy.. they provide the equation in the question

thanks well what abt bio plz!!!

 

[silverstar]

some notes for bio atp n che atp plz!!!

 

[Syed Hemail Pasha]

god bless u

 

[Faatimah]

Thank You

 

[masher]