May/June 2013 physics p31...Doneee...Hurrayyyy...!!!

[Relon]

what was the answer of air resistance was it increased or decreased

I wrote it increase.

 

[Wolfgangs]

For the Pressure in atmospheric pressure. What was the second question, which I assume calculate the pressure? If so, how did you guys get it?

 

[Wolfgangs]

Guys, someone please answer to my question about the atmospheric pressure one XP. I honestly can't wait to know the answer. I meant the second part of the question where they mentioned the atmospheric pressure. What was the question exactly and what was its answer. (This is about Paper 31)

 

[Wolfgangs]

Also, I don't remember the question exactly. But, I add the atmospheric pressure + pressure I got in (a) of the question.

 

[JagRoss]

Also, I don't remember the question exactly. But, I add the atmospheric pressure + pressure I got in (a) of the question.

You should do atmospheric pressure - pressure you got from (a).

 

[Alex10]

Guys, someone please answer to my question about the atmospheric pressure one XP. I honestly can't wait to know the answer. I meant the second part of the question where they mentioned the atmospheric pressure. What was the question exactly and what was its answer. (This is about Paper 31)

The density was 13600 so the pressure is 34000 pa and the second part 34000 + 102000=136000pa

 

[Relon]

The density was 13600 so the pressure is 34000 pa and the second part 34000 + 102000=136000pa

Yes , i think that's exactly what i did, you have to add atmospheric pressure and the pressure you got not subtract them.

 

[JagRoss]

Why?
Atmospheric pressure should be more than other pressure.

 

[sara fayed]

he is asking to find the gas pressure not the atmospheric one so u subtract

 

[Relon]

he is asking to find the gas pressure not the atmospheric one so u subtract

actually, he is asking about the total pressure exerted on the flask, not just the gas but also the atmospheric.

 

[Relon]

A very similar question came on 2012 oct/nov variant 3 Question number 4

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_33.pdf

 

[kevinjohn]

yea dude... any, comments about the time used in the echo question?

A very similar question came on 2012 oct/nov variant 3 Question number 4

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w12_qp_33.pdf

 

[Relon]

yea dude... any, comments about the time used in the echo question?

i used the equation s=2d/t , where t was the difference of the given times , the answer is 314 or 312 something like that i can't remember

 

[kevinjohn]

osm!!!! i got that right!
Thanks dude

 

[Relon]

your welcome ,,

 

[Wolfgangs]

What was the question exactly? I want to know what was the question exactly and what did they want. Does anyone remember the question exactly?

 

[Igcse giver]

guys for v2 what was the radiation was it gamma or beta in sample 1

 

[Yahia Diaai]

resistance incread or decreased

air resistance increases ... and the answer of the last part of the question was equal to the weight = 920 N

 

[Yahia Diaai]

the difference in time was 1.6s & be using 2d/t it gives us a speed = 312.5 m/s

 

[Yahia Diaai]

the question of the power of the lamps, what was the answer ?