Physics, Chemistry and Biology: Post your doubts here!

[shoaib672002]

Windows 8.1??

Yep

 

[ahmado]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w10_qp_33.pdf
please help in question 1 iii) and all question 2

for 1 iii

 

[Gamedos]

Please solve the first question

can u take a clearer picture?

 

[roselmoreno21]

View attachment 41477

how to solve part (b) plz some help

what is the answer to a??

 

[slisjunknown]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w13_qp_11.pdf
I have a problem in question no. 27...the answer is B, how????

 

[Akshajistari]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w13_qp_11.pdf
I have a problem in question no. 27...the answer is B, how????

X reacts is the only one that reacts with carbon, showing that it is the lowest in the reactivity series.
Then, Y reacts with cold water but W does not, making Y more reactive.
The order is now X W Y , therefore the answer is B.

 

[Abdel Moniem]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s08_qp_1.pdf
Question 37

 

[Hello090078601]

Guys, I'm looking for notes on Action & use of Circuit Components (Diodes/transistors/Potential divider arrangements etc) for IGs

I'd be grateful if u cud direct me to a file or link which explains this topic.

 

[ahmado]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s08_qp_1.pdf
Question 37

it is c because when the resistance changed to 90 it shared a lower voltage since r is proptional to v using the equation r=v/i as r decreases v decreases so the other one shares the voltage remaining in the circuit so reading becomes a little higher

 

[ahmado]

what is the answer to a??

it is a metre rule so the maximum mass it can hold is 250g so answer should be between 50 and 250 g

 

[awesomaholic101]

View attachment 42885

d1 for anticlockwise moment:
0.2 - 0.03 = 0.17m
F1 for anticlockwise moment:
WN

d2 for clockwise moment:
0.5 + 0.03 + 0.25 = 0.78m
F2 for clockwise moment:
160N

* i am dividing 0.06m by 2 to get 0.03m ... bcoz the distance is given from half the block
*in this case the pivot is the first block dats y d2 is from the pivot to the centre of mass of rule

F1 x d1 = F2 x d2
0.17W=160 x 0.78
W=(160 x 0.78)/0.17
= 734N

hope u understood

 

[awesomaholic101]

Please solve the first question

is the answer c??

 

[princess sofia]

Please solve the first question

ans is c
we ll use the smaller one to get more precise reading and we shd always read the volume from bottom of meniscus
btw it reads may 2014 or m i mistaken

 

[awesomaholic101]

ans is c
we ll use the smaller one to get more precise reading and we shd always read the volume from bottom of meniscus
btw it reads may 2014 or m i mistaken

lol ... that is not the year of paper ... its probably the date he took the image ... cz its 2014/5/16
srry 2 b the one 2 crush ur hopes

 

[princess sofia]

lol ... that is not the year of paper ... its probably the date he took the image ... cz its 2014/5/16
srry 2 b the one 2 crush ur hopes

i m nt kidding zoom the date its written on the paper ,
#stillHopeful

 

[awesomaholic101]

i m nt kidding zoom the date its written on the paper ,
#stillHopeful

oh my god!! yes!!! ... do u think his skl mite hav changrd the code wen they gav it as an xam or smth??

 

[princess sofia]

oh my god!! yes!!! ... do u think his skl mite hav changrd the code wen they gav it as an xam or smth??

i dnt thnk so its a school exam , dats why i asked
really curious to knw

 

[awesomaholic101]

i dnt thnk so its a school exam , dats why i asked
really curious to knw

ROFFL!!!!

 

[R_Ma7mooD]

Guys can u help me with:

One man walks along a 10 meters slope at a height of 3 meters. And another man walks straight forward for 8 meters then climbs a ladder at a height of 3 meters.
Which man does more work and why?

 

[R_Ma7mooD]

Its 2014 paper

how in the world did u get it!? ps: I don't support cheating bro, u are not learning anything by doing this.