physics paper 1,2 ........can we discuus da papper nw?

[MustafaMotani]

is radon gas ryt.. ??

 

[ashiqbal]

is radon gas ryt.. ??

i dont really know about that

 

[Tharindu]

In da paper1 the last question, about the half life thing, wats the answer, is it 4 minutes?
In paper 2 section A we had to draw field lines from the spheres, so is it frm positive to negative

Yep both are correct

 

[MustafaMotani]

I had seen once in marking scheme...

 

[plantaholic]

do you understand a word i am saying? i am saying that it is momentarily at REST , so at that particular movement, it is NOT MOVING!

feel free to use it, if u mean it! better to let it out than hold a grudge, dont you think, eh? and anyway, i understand that what you are trying to say is that the movement of the particle at the next instant would be downwards, right? but if it was not mentioned about the movement of the particle at next instant, then couldnt it be movement of particle at the previous instant as well, which was upward? I hope that yours is right, not fighting or anything, but just expressing the facts as they are!

well said!


ok ok! but the question said "draw an arrow on fig 6.1 to show the direction of movement of particle at X", and even if it was force, if a particle is at rest, there is no resultant force acting on it!

lets just forget k there was any such question.. ive got computer atc tomorrow.. and i've become addicted to xpf

 

[Tharindu]

i dont really know about that

It's correct...

 

[plantaholic]

thanks,,
For da section B radioactivity question from where does da background radiation come?? Any answers?

cosmic radiation and radiations from earth's crust..

 

[MustafaMotani]

It's correct...

u shud have said that to me ..

 

[ashiqbal]

lets just forget k there was any such question.. ive got computer atc tomorrow.. and i've become addicted to xpf

you are completely 100% right!! forget physics p2! study chem!

 

[MustafaMotani]

The tests below were carried out on a solution containing ions of the metal X.
test observation
add sodium chloride solution no change
add sodium sulfate solution no change
add sodium hydroxide solution a precipitate was formed, soluble
in excess of the hydroxide
What is metal X?
A calcium
B iron
C lead
D zinc

check it out

 

[Tharindu]

The tests below were carried out on a solution containing ions of the metal X.
test observation
add sodium chloride solution no change
add sodium sulfate solution no change
add sodium hydroxide solution a precipitate was formed, soluble
in excess of the hydroxide
What is metal X?

A calcium
B iron
C lead
D zinc

check it out

I think it's zinc...correct?

 

[plantaholic]

I think it's zinc...correct?

i think so too.. because of the NaOh test

 

[plantaholic]

IS ANYBODY APPEARING FOR COMPUTER ATC?

 

[MustafaMotani]

I think it's zinc...correct?

yeah

 

[Tharindu]

yeah

Lol...that wasn't hard...

 

[MustafaMotani]

Lol...that wasn't hard...

yeah but lead also dissolves in excess NaOH most would get confusd

 

[Tharindu]

Try this-
Oct nov 2005 paper 1 question 28

 

[Tharindu]

yeah but lead also dissolves in excess NaOH most would get confusd

Is lead soluble in excess...anyway is lead there in our syllabus?? I don't think so

 

[daredevil]

bikermicefrmars I wasn't really too sure but I wrote to monitor the temperature and use a fan to regulate it.

daredevil yeah the arrow should have been downwards.

thanks dude i wrote the same as u for the fan one too althoug later i thought maybe it was stupid

 

[MustafaMotani]

Is lead soluble in excess...anyway is lead there in our syllabus?? I don't think so

it is in our syllabus