Physics: Post your doubts here!

[robinhoodmustafa]

.

Um.

Just Add "In the direction of the force acted" after writing product of mass and velocity... talking about Part a "momentum def"

now in part b.
Just write the "rattaa" howa 2nd law
If an external unbalanced force acts on an object it produces acceleration .this acc is directly proportional to the applied force.

than he is asking to show impulse is proportional to (means equal to) change in momentum

F=ma (2nd law)

break ... a = v-u/ t
substituite the break form of a in f=ma equation

In end you will get this

Ft = M(v - u )

and M (v - u) is the change in momentum so "Delta P"

 

[princess Anu]

Do you visit Sir Faisal ? because of the serial no "11" (i also have this worksheets with me)

btw here is the solution.

View attachment 49969

Haha yeah
Thanks

 

[MiniSacBall]

Qp: http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w07_qp_2.pdf
Ms: http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w07_ms_2.pdf
Q6 b.
According to the mark-scheme the potential difference across the cable is 5V.
How????

 

[The Sarcastic Retard]

Qp: http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_qp_2.pdf
Ms: http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_ms_2.pdf
Q6 b.
According to the mark-scheme the potential difference across the cable is 5V.
How????

230V - 225V = 5V

 

[Sarosh Jameel]

HELP ME WITH THIS : http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_22.pdf

Q2 part b

 

[alfyyule]

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.

 

[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