Physics: Post your doubts here!

[marduk]

can someone give me the link to the 2014 question papers?

 

[Glory Hunter]

thanks

there are some other solved problems on projectile motion there. the question s above it.

Take a look at them. It should help

For sure your blog is epic

 

[janasalem]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s09_qp_2.pdf
variant 2 question 2 b

 

[janasalem]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s09_qp_2.pdf
variant 2 question 2 b ?

 

[janasalem]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s03_qp_1.pdf
question 7 explanation please for vertical component

 

[SIstudy]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w09_qp_32.pdf
can somebody plis help me with Q1 (e)
I'm confused with the negative sign here
like should m= k+pAg
or m= -k-pAg

 

[SIstudy]

it's gradient = - (k+pAg)

the -ve sign should cancel at some point or the ans may be -ve

is it okay if I write
m= -k-pAg
?

 

[adarsha]

afc://09ba817d02c813536e1c2295a58926c36d7cad8b/DCIM/102APPLE/IMG_2883.JPG

the answer is 20KJ

 

[adarsha]

https://www.dropbox.com/s/tfxmd42q05vh7cr/IMG_2883.JPG?dl=0

 

[Masoom Gilani]

Pleaseee Help me solve part b and tell me how you did it. I've already finished my A-Level a few months back and don't remember it anymore. My friend asked me this question and she means alot to me. Please Help. Thank You.

 

[Masoom Gilani]

i've tried to explain with much details at
http://physics-ref.blogspot.com/2014/05/physics-9702-notes-worked-solutions-for.html

(at the bottom)

if there's any mistake, let me know. do you have the answers? (but I'm quite sure my answers are correct)

Also, I really need some help that I think you or your friend can provide. I really need this book from which you took this question (in softcopy) and all its associated resources. Could you send it to me. Or scan and upload it. It's the new physics coursebook 2014 for the new syllabus 2016.

Plz, see if you can send upload it. I would really appreciate

Thank You So Much!
I dont have the correct answers. I gave my Textbook to my friend and she has it but the textbook doesnt have the answers. We dont have the softcopy of the textbook, so sorry And scanning so many pages would be difficult, her exam is in less than a month's time. I'll try searching it online if i find i'll send it to you, for now i found this but its just the preview so doesnt contain all the pages.
http://books.google.com.my/books?id=SjsDBAAAQBAJ&printsec=frontcover#v=onepage&q&f=false

 

[JackAaron]

Hi guys,can you help me on Qn 1. b) ii)...thanks

 

[JackAaron]

November 2007 1. b) ii)*

 

[Bba321]

Does any one have Cambridge International AS Level and A Level Physics Coursebook by David Sang on mediafire?
I lost mine and cannot find it anywhere.Please helpp

 

[Awesome12]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s13_qp_22.pdf
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s13_ms_22.pdf

Question 3 (b) (iii)

The previous part ( vertical component of T) is equal to 23 N

Now my method of solving it is:

Tan 50 = AC / 1.2

AC = 1.43


23 * 1.43 = (8.5+W) * 1.2

W = 18.9 = 19.0 N


Now the method in the marking scheme is a bit different, but my final answer ( 19.0 ) is still the same. Is my method acceptable or not?

 

[Awesome12]

check the comment at http://physics-ref.blogspot.com/2014/06/9702-june-2013-paper-22-worked.html

Oh I see. Stupid mistake

Thanks dude.

 

[Charlotte20102013]

Hi. Can someone help me with these questions?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_11.pdf
Q9 B (Which concept or theory used?)
Q10 C (Why is A not the answer?)
Q30 C (Shouldn't there be interference patterns on RS as well?)
Q32 C
Q33 A (I chose C as answer)
Would be great if you could provide me explanations. Thanks in advance!

 

[princess Anu]

Q: A moving body undergoes uniform acceleration while travelling in a straight line between point X,Y and Z. the distances XY and YZ are both 40m. The time to travel from x to Y is 12s and y to Z is 6.0s.

 

[Charlotte20102013]

explanations are available at

http://physics-ref.blogspot.com/2014/05/physics-9702-notes-worked-solutions-for.html

at bottom

No, you have only provided P12, while I need P11.

 

[princess Anu]

what does it mean
Calibrations are relative?