Physics: Post your doubts here!

[MiniSacBall]

230V - 225V = 5V

Whut! , i wish i had my electricity concept was clear, i don't even know proper definitions for each! >.<, everything is messed up.

 

[The Sarcastic Retard]

Whut! , i wish i had my electricity concept was clear, i don't even know proper definitions for each! >.<, everything is messed up.

"Prefer smart work over hard work."

 

[The Sarcastic Retard]

Asalamu Aleykum, could you please help locate answers for the physics classified papers 1 and papers3 igcse as well as electricity 1 and 3 prepared by Preeti Manoj? I'll highly appreciate. Thanks.

I don't know about IGCSE but for As and A level here you go : http://physics-ref.blogspot.com/

 

[Bba321]

Help me with this question please

if the Earth has radius R and the acceleration due to gravity at its surface is 9.8 m/s^2 , calculate the acceleration die to gravity at a point that is distance r above the surface of a planet wth half the radius and the same density

reference : Calculations for A level physics pg71

Thanks a lot

 

[Sadia Jahan Lisa]

Is there any book for physics paper 5 (Planning Analysis And Evaluation) where I can get helps, (like planning techniques, suggestions and paper 5 related contents)??
If there then please tell me the name of the book as well as the writer.
Thanks In Advance

 

[cool Hassan]

plz help me with this question.. why the ans cant be C????

 

[cool Hassan]

help plzz

 

[cool Hassan]

could you include the references

first and second one is from oct nov 2005
third one is from june 2007

 

[Sarosh Jameel]

PLZ HELP WITH THIS ONE !
OCTOBER 2012 / 23

 

[robinhoodmustafa]

PLZ HELP WITH THIS ONE !
OCTOBER 2012 / 23

Hope I am right but I am sure this is the correct diagram.
and apply cosine rule in part 2. I have written the equation.. Pls check using the calculator and confirm if the answer is right ? *Curious*

 

[Sarosh Jameel]

View attachment 50075
Hope I am right but I am sure this is the correct diagram.
and apply cosine rule in part 2. I have written the equation.. Pls check using the calculator and confirm if the answer is right ? *Curious*

Thanks man !!! its absolutely correct

 

[cool Hassan]

june 2008 Q16
help required

 

[manutd96]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s10_qp_41.pdf

ques 1bi, what is the reason the point S is below C?? how do we know that it will snap there?

 

[immie.rose]

Sorry if this is a repeated doubt. I need help with Q4 parts (b)(i) 1, (b)(ii) 2 and (c). please help!
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w03_qp_4.pdf

mark scheme: http://papers.xtremepapers.com/CIE/...A and AS Level/Physics (9702)/9702_w03_ms.pdf

 

[Sadia Jahan Lisa]

Guyz Paper 2 & Paper 4 : http://www.mediafire.com/?g65j51stacmy33c this link is not working,it's saying that the file had been removed for violation.Is there any other link for Paper 4 one?

TIA

 

[immie.rose]

check qu 272 aT
http://physics-ref.blogspot.com/2015/01/physics-9702-doubts-help-page-45.html

Thanks a bunch!!

 

[MiniSacBall]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s06_qp_2.pdf

Q7 a) Shouldn't the result for 3 test in the table be 30 Ohm, why is it 15.
What should have been the result if S1 and S2 were closed and S3 was open.

 

[MiniSacBall]

check q 274 at
http://physics-ref.blogspot.com/2015/01/physics-9702-doubts-help-page-45.html

Thank you so much.

 

[princess Anu]

Q1 why not D
and Q2 as well

 

[princess Anu]

Explain both of these please
for the second one, my question is how do we know if the system is isolated and the conservation of momentum can take place? shouldn't we consider air resistance as an external force and so the answer should be A, no?