Physics: Post your doubts here!

[Mohammed salik]

2002 summer.

U Serious ?

 

[Thought blocker]

U Serious ?

Why would I be kidding ? For me it was, and old paper style has been repeated in 2014 so I'll recommend you 2002 winter and summer both.
Shaq q kartey ho ? !

 

[Mohammed salik]

Why would I be kidding ? For me it was, and old paper style has been repeated in 2014 so I'll recommend you 2002 winter and summer both.
Shaq q kartey ho ? !

Haha! Give me Link !
No "shak" Bro.. was trying to see If u were Joking.. Coz i can only find w2002 Papers On This website !

 

[Faithix MFSH]

Guys need urgent help here.
9702/52/M/J/13

Question 2
Part d(i)
And therefore (e)

My gradient is: 44.9 x 10^-3
And hence my E becomes 3.56
And my V, in (e) is therefore 55.6 +/- 5

According to the marking scheme, I went wrong at part (d)(i), E they say, is my answer x 10^4

Someone please solve Q2 of this paper and see how things going with the marking scheme.
Boards are so close..
Thanks!

 

[M.Shahzaib Shoaib]

Can anyone put really good revision notes for Physics ?

 

[Haya Ahmed]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_22.pdf
Q6d and Q7b(ii) (1)

and

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s06_qp_2.pdf
Q7(a)

and


I have no idea about doing questions related to horizontal components, the ones with tan, etc.
Could someone give me a complete explanation of how to deal with such questions?
Q1b

QP: http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_22.pdf

Please Help me ASAP ! Thanks ^_^

 

[Snow Angel]

please can someone explain the q 1d) from: papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_23.pdf

please answer as soon as possible. thnx in advance.

 

[Thought blocker]

Haha! Give me Link !
No "shak" Bro.. was trying to see If u were Joking.. Coz i can only find w2002 Papers On This website !

qp ms

 

[itallion stallion]

Can anyone provide me link or upload something that can help me with inverting and non inverting amplifier.thanks a lot!

 

[IGCSE13]

qp ms

Can u please help me with q3b ?

 

[itallion stallion]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w13_qp_41.pdf
Q4bii 2(graph part)

 

[Zepudee]

How to do this guys? Please help!

 

[Mohammed salik]

How to do this guys? Please help!

And Plz use Scale like 1cm=10 N..!

 

[Wolfgangs]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s07_qp_2.pdf

How to solve Q3 c ii? Is there a specific concept for the mean separation?

 

[Zepudee]

View attachment 42359
And Plz use Scale like 1cm=10 N..!

Thank you sir!!!

 

[Mohammed salik]

Thank you sir!!!

You'r Welcome Miss !

 

[IGCSE13]

Sep

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s07_qp_2.pdf

How to solve Q3 c ii? Is there a specific concept for the mean separation?

separation is equal to the cube root of volume

 

[Autumngirl]

I am confused about significant figures in paper 2. I've always been told to give as many significant figures in the answer as the least number in the data provided e.g. If data has both 2 and 3 significant figures, the answer must have 2 as it's the number in the least precise data. However, in the papers the mark scheme doesn't always follow this rule. Check out MJ11p23 question 3. Can somebody please explain why the examiners do this and give me a perfect rule about significant figures? Thank you!

Someone please guide me! Wrong significant figures make you lose marks even if your answer is correct so it's like giving away marks. How do you guys determine the correct number of significant figures for any answer?

 

[ZaqZainab]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_22.pdf
Q6d and Q7b(ii) (1)

and

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s06_qp_2.pdf
Q7(a)

and


I have no idea about doing questions related to horizontal components, the ones with tan, etc.
Could someone give me a complete explanation of how to deal with such questions?
Q1b

QP: http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_22.pdf

Please Help me ASAP ! Thanks ^_^

Q6d there is something wrong with the voltage it is not divided equally you know the formula R=V/I if you make V the subject R*I=V it means there is something wrong with the resistance in the wire or the current
Q7 the alpha particle should be moving ie it should have a kinetic energy so it goes and hits the nitrogen 14 nucleus like if you keep an alpha particle next to a nitrogen it will just push it away its just the alpha particles scattering experiment with a Nitrogen nucleus instead of a gold


Q7 (a) they have mentioned all the lamps are similar and therefor they all have the same resistance but one of them is faulty
by the 2nd reading from the table you might know A=15 ohms and so you can assume B and C are also suppose to be 15 but one of them is faulty
by the third reading you can confirm that B is 15 cause A and B are in series and the total resistance is 30
left with C which is most probably the faulty one but wait find the resistance if C was not faulty it would be 22.5 but the answer says 15
shorted lamps are lamps going to earth short circuited faulty

I used to hate this questions never used to get them but they make sense now
I always like to make a figure on the side and work on it rather than work on the fig given but you make the call

 

[ZaqZainab]

Someone please guide me! Wrong significant figures make you lose marks even if your answer is correct so it's like giving away marks. How do you guys determine the correct number of significant figures for any answer?

Most of them if they are really strict about your significant figures they mention that
and if they don't i like to have my significant figures as they have the significant figures in the question
like for example in the question the acceleration is given to be 3.54 ms^-2
now i will have my answer to 3 significant figures