Physics: Post your doubts here!

[Sarosh Jameel]

Distance b.w two consecutive crest... is 10 cm

use v=f * wavelength

340 = f * 0.2
f=1700 hz

Confirm the answer

Thanks ...its correct

 

[princess Anu]

Somebody explain

 

[Bba321]

Please help me with http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s09_qp_4.pdf qs 9 part a and b

Thanks a lot

 

[robinhoodmustafa]

Thanks ...its correct

wavelength is 0.1 m right?
or was it 0.2

 

[guccifier]

Hey I need notes on the section B of A2: communication nuclear physics, etc...
I need simple understandable notes
Infact any notes on A2 will be fine.
If any one has access to compiled question and answers please help.
I really want to make an A* for physics.

 

[omg]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_23.pdf

Can someone please guide me on how to do Q6 part B and C part(iv)

 

[a_wiserME!!]

Hey I need notes on the section B of A2: communication nuclear physics, etc...
I need simple understandable notes
Infact any notes on A2 will be fine.
If any one has access to compiled question and answers please help.
I really want to make an A* for physics.

i just got this link for A level notes...http://daniellimjj.blogspot.in/2014/06/full-notes-for-cambridge-international.html
check it out

 

[iqbal]

Please ... Can somebody help me out with question 63...

 

[smhfifa]

Does anyone know where can I get cambridge as and a level physics coursebook pdf for free.

 

[iqbal]

I still cannot understand the question... If mass is 4 times so deviation is less but answer C illustrates the nucleus going beyond proton ....???

check at
http://physics-ref.blogspot.com/2014/08/9702-november-2012-paper-12-worked.html

I still cannot understand the question.... If mass is 4 times than deviation should be less but answer C illustrates the nucleus going beyond proton... ????

 

[mamamamama]

I need help I am forgetting one physics formula its something to do with 1/3* m * N = P or something there is suppose to be a V somewhere at the mass or number of mol,,,,, and u can covert it to become PV= nRT or...losing my head here thinking of one formula

 

[Liv2Stdy]

I need help I am forgetting one physics formula its something to do with 1/3* m * N = P or something there is suppose to be a V somewhere at the mass or number of mol,,,,, and u can covert it to become PV= nRT or...losing my head here thinking of one formula

I guess you can put the Greek letter "Ro" instead of "C" there too!

 

[princess Anu]

whats the diff between A and B?

 

[MiniSacBall]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w08_qp_1.pdf

Q28, Why D , it should be B,
Redesigning the apparatus as a typical, light interference apparatus. We can use the equation ax=λd , In this case instead of fringes we have, those loud and silent, since x is the distance between the, we have x = λd/a , which means in order to decrease we have have to either increase λ or d (L) , or decrease a (d), Thats, why increase L should be the answer. And far as D goes i think in v=fλ ; f=v/λ , so increase frequency means decreasing λ, and therefore decreasing x .

 

[qdkhan]

Salam!
Can someone please help me with Q25 in this paper?
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s09_qp_1.pdf

 

[Ahmed Ali Akbar]

Salam!
Can someone please help me with Q25 in this paper?
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s09_qp_1.pdf

Gradient=rise/run.=sin(theeta)/lambdda
dsin(theeta)=nlambda
d=1/N
(1/N)sin(theeta)=nlambda
sin(theeta)/lambda=nN
So,answer is A.

 

[ashcull14]

help plz wd full explanation

 

[ashcull14]

help :/

 

[Bba321]

Please help me with these questions? Thanks

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s13_qp_41.pdf Qs 2 part b2

papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_s13_qp_42.pdf. qs 2

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_41.pdf QS 2 b

 

[ashcull14]

the second one is explained at
http://physics-ref.blogspot.com/2014/07/9702-june-2013-paper-42-worked.html

2 ques more above can u xplain dose aswel plz