Physics, Chemistry and Biology: Post your doubts here!

[CaptainOmerica]

PEOPLE. I NEED URGENT HELP IN THIS PHYSICS PAPER 6. HERE'S THE LINK:
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_qp_61.pdf
GO TO PAGE 7, PART(C)... ANY EXPLANATION ABOUT THE NUMERICAL WOULD BE DEEPLY APPRECIATED. K

 

[CaptainOmerica]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_32.pdf
PLz help me wid Q11 b asap plz thanx in advance

For Part(a): The reason is that the radioactive sample has completely decayed and what's left is the background radiation. That's why there isn't any further drop.
For (b) Subtract the Half-Life from the total radiation. <<just a breakthrough>> If you do consider the background radiation, your answer will be correct.
(c) Gamma Rays are highly penetrating. Alpha might not reach but he'll still be exposed the cancerous Gamma Radiation. Hope I helped.

 

[Princess Raven]

guys what elements i have to memorize there colors in chemistry plzz.....

none

 

[sumaiyarox:)]

chem notes

 

[sumaiyarox:)]

thanx ...

t-word

 

[Ibtizam]

t-word

ooops

 

[sumaiyarox:)]

ooops

 

[Rockzstar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s08_qp_1.pdf

why is the answer to question 13 = D ?
is there any logic behind it to understand ???

 

[Ibtizam]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s08_qp_1.pdf

why is the answer to question 13 = D ?
is there any logic behind it to understand ???

cuz @ cathode Hydrogen or a metal is formed so X and Y
bromine is formed @ anode
and d theory all gas @ anode
except H @ cathode....

 

[Princess Raven]

guys can someone plz plz plz explain what a control is in bio p6!!

 

[Rockzstar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s08_qp_1.pdf
question no 26 Plz explain y is the answer D??

 

[amxrox1]

hey guys, im going to sit my IG's this week ! i need help with bio paper 6, what topics should i revise for this paper?

 

[akshar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_33.pdf

Question 11 b
how is the answer 1.2-1.8 day?
how to deduct the background reading?

please help.

 

[zain1245780]

can someone plz tell me the correct position for a voltmeter in Q3.a and the position of rheostat in Q3.d? below is the link. and one more question, all the readings i take from my scale (meter rule) are lesser than the ones in mark scheme, there is a big difference, i have also changed my scale but the result is same, why is it so? thanks in advance. http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_ms_62.pdf

 

[Princess Raven]

hey guys, im going to sit my IG's this week ! i need help with bio paper 6, what topics should i revise for this paper?

we all are lol! and everyone particulary the plants and osmois chapter and know the tests they are very imp

 

[amxrox1]

we all are lol! and everyone particulary the plants and osmois chapter and know the tests they are very imp

loool thnx ! ill learn them

 

[zain1245780]

theres is no topic on Ray Tracing in my book, can some one plz give me its notes or ...?

 

[Ahmed Shazly]

assalamo3alaykum, In chemistry paper 1 does anyone now how to get the answer in question 16 here is the exam http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w10_qp_12.pdf

 

[Reddah Nadeem]

When is ur chemisrty ppr ? ? ?

 

[Ahmed Shazly]

When is ur chemisrty ppr???

8th of may