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# destined007

Please tell me how to solve this [pdf] 9702_w10_qp_21.pdf question 5 c. Why do we take angle to be 90? Please your help will be appreciated.
1. Thought blocker
Late :P
As stationary wave doesn't travel, the speed calculated is speed of the incident and reflected waves. these two waves superimpose/interfere to create the stationary wave
Jun 26, 2014
2. Ammar Farman
HI I NEED I.T PAST PAPER CAN U PLZ SEND IT THANKYOU.
3. ziemah11
hey..can you post format/tips or sample answer for chemistry paper 5 any year 2007 onward if possible. i haven't learned it but exam is around the corner thank you =)
1. destined007
I have posted paper 5 help in some of my previous posts. You will have to search for them in this forum.
Sep 14, 2012
4. A.Q
can some1 tell me the solution of the following question (its in Oct/Nov 2010, 9709/32, Q7 Part(ii))

With respect to the origin O, the points A and B have position vectors given by
−−→
OA = i + 2j + 2k and
−−→
OB = 3i + 4j. The point P lies on the line AB and OP is perpendicular to AB
(ii) Find the position vector of P.
5. Bella Chan
thx so much for the mark scheme!
6. Slash
How's ur Undergraduate study is going?
7. parthrocks
hey where r u since so many days!!!!???
8. parthrocks
And apart from notes can u also send me the link of the whole solutions of exercise 16D of chapter 16-Integration of puremathematics 1 textbook...plzzz i need help asap.......and also the notes.oh allah
9. parthrocks
Hello.it been quite some time since I last wrote to you.This time its something more important that before.I need some as and a level notes for subjects like accouting,economics and especially puremathematics 1 as the portion is soo vast.
10. monty
can you please email me the chemistry 2011 november and May papers. Chemistry HL and SL with markschemes.
my email is [email protected]

my email is [email protected]
11. Irfaan
hi due u have the 4AC0 marking scheme Accounting
12. Faizel
Hi Destined007 , I was looking for 4EC0 , for IGCSE "o" levels ,and ICT
I reallt cannot thank you enough for sharing the rest subjects . **
13. Faizel
Hi Bro , do u have 4ECO economics june 2011 paper posted edexcel Igcse