Physics, Chemistry and Biology: Post your doubts here!

[areebaization]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w03_qp_1.pdf
q 6! :/ howw?

1.30 kg-0.90 kg. is the Half amount of oil (0.4)
Now double it (0.8) and subtract from the original 1.3 kg you'll get 0.5kg
Hope that helps

 

[areebaization]

this one please
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w03_qp_1.pdf
question 4 hows the answer because d=s/t. so it should be 70/210 :/

Time=distance/speed

 

[ZainH]

thanksss a lot! but 1 doubt q38 even A tuesday its 50 and wednesday its 25 isnt it halved?

It says the half is 2 DAYS. Between tuesday and wednesday theres only ONE day. Thats why its not correct.

this one please
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w03_qp_1.pdf
question 4 hows the answer because d=s/t. so it should be 70/210 :/

D= S*T . For example if your travelling at 10m/s for 1 second, you cover 10 meters.
so T=D/S which is 210/70 (3 hours).

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_w03_qp_1.pdf
q 6! :/ howw?

The mass of a full bottle of oil (Mass of oil+mass of bottle) is 1.30kg. When half the OIL has been used it's 0.9kg.
1.30 - 0.9 = 0.4 which is half the mass of the TOTAL oil. So total oil would be 0.4*2= 0.8kg.

Now that you know the mas of the total oil just subtract it from the mass of the bottle, 1.30-0.8= 0.5kg!

URGENT!
pleaseee explain the working of a potentiometer!
(REFRENCE: this question) pleaseee

A potentiometer is basically a variable potential divider. It varies the resistance across a potential divider the same way a variable resistor varies the resistance across a resistor.

 

[za Shadow]

hey guys PLZZZZZZ NEEDDDDDD URGENT HELP!!!! EXAM TOMORROW

give me any HELP ME WITH SEQUENCE

TELL ME ANYTHING THAT COULD HELP ME TO SOLVE ANY SEQUENCE QUESTION NO MATTER HOW HARD IT IS PLZZZZZZZZZZZZZ

 

[areebaization]

A potentiometer is basically a variable potential divider. It varies the resistance across a potential divider the same way a variable resistor varies the resistance across a resistor.

with ref. to this please how can we know which lamp receives more voltage? Clear explanation would be appreciated:
http://www.xtremepapers.com/community/attachments/untitled-jpg.9470/

 

[GetSomeLife]

with ref. to this please how can we know which lamp receives more voltage? Clear explanation would be appreciated:
http://www.xtremepapers.com/community/attachments/untitled-jpg.9470/

This question isn't exactly about voltage. As you move the line towards X, you give a path to the current with no obstacles (resistance). Therefore, MOST of the current will take the path with lower resistance and less current will pass through L1. Accordingly, it will get dimmer.
L2 will get brighter as the increased amount of current is supplied to it!

 

[sma786]

i dun wana study anymore =[ ... n none of the chemistry papers r over yet =[ ! Ufffffff

 

[The sun]

pls can anyone help me in solving these questions in Physics ppr 1

nov. 2011 (varient 2) Q.28
nov. 2008 Q. 35
nov. 2006 Q. 16
nov. 2005 Q. 39
thanx a lot

 

[kainat husain]

Thank you every one for the help! may ALLAH bless you all
who all gave the physics paper 1 today?

 

[Dsilentkila]

$alam$
BIO PAPER 6 HELP!
Any body got any site where i can check out diagrams and experimental procedures?
or even any tips would do.
thnks in advance!

 

[sma786]

Why is no1 discussing today's physics paper ??? :\
Bdw, what was the answer for the last mcq, the neutral atom.. wat it B or D ?

 

[Ahmedm96]

only 2days for p6 and iget 0/5 for my drawing hateful pat of p6

any reccomendes to how to review and study for p6 ispend alot of time studying but result is Nothing

 

[igcse student 5558]

can u plzz show me how to draw the bar graph for qs.1(ii) may 2005 p6
plzzz thanxxx in adv.

 

[igcse student 5558]

Why is no1 discussing today's physics paper ??? :\
Bdw, what was the answer for the last mcq, the neutral atom.. wat it B or D ?

D is the correct ans

 

[kainat husain]

who all did physics paper 12 2012

 

[kainat husain]

hey can some one explain about- copper (II) sulphate using copper elctrodes that what will be at anode and all please?

 

[Lost_Life]

WHAT IS cladistics (based on RNA/
DNA sequencing data)???
I SAW IT ON THE SYLLABUS BUT I NEVER TOOK IT!

 

[always-smile :)]

can anyone tell me what can i study for paper 6 bio ??

 

[Lost_Life]

You have to study:
1-Viruses, Bacteria, Fungi, Flowering Plants, Arthropods
2-Practical work
3-Eye
4-Food Test
5-Characteristics of living organism
6-Classification of living organism
7-Cell structure and organization
8-Magnification
​

 

[always-smile :)]

You have to study:​

1-Viruses, Bacteria, Fungi, Flowering Plants, Arthropods​

2-Practical work​

3-Eye​

4-Food Test​

5-Characteristics of living organism ​

6-Classification of living organism​

7-Cell structure and organization​

8-Magnification ​

​

only !!! .. r u sure??