A2 Physics | Questions and Doubts [Post Here]

[Martee100]

AsA

As the other thread is getting filled with AS questions. Use this one for asking asking A2 related questions.

 

[sitooon]

Help in op-amp

If someone can tell me the way to draw Vout of op-amp ,
9b(i) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_41.pdf
same type of question of V out graph in w13
9b(ii) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w13_qp_43.pdf

 

[itallion stallion]

sweetJinnah and others can u plz help me with these question.
Plz help me with these questions
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_qp_4.pdf
October November 2007 q10 c part(plz attach the photo of graph as it would be really help)

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_43.pdf
October November 2012 paper43 q5 Cii.
Thanks a lot!

 

[Musab100]

Can anyone help me with these questions please ???
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w07_qp_4.pdf

Q1 b(iii)
Q2 b(ii) 2
Q4 c(ii)
Q6 b(i)
Q7 (c)

 

[itallion stallion]

Plz help me with these questions
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w07_qp_4.pdf
October November 2007 q10 c part(plz attach the photo of graph as it would be really help)

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_43.pdf
October November 2012 paper43 q5 Cii.
Thanks a lot!

Thanks for the like,can u plz solve it?
Thanks!

 

[sweetjinnah]

Can anyone help me with these questions please ???
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w07_qp_4.pdf

Q1 b(iii)
Q2 b(ii) 2
Q4 c(ii)
Q7 (c)

Q2 bii) W=mg
mg / gravitational force calculated in b( i)
=> (4*1.66*10^-27) * 9.81 / (2.49*10^-46)
=> 2.6*10^20
Q6 bi) The current in one loop pf wire produces magnetic field which is perpendicular to the current in the second loop. According to the Newton's Law, their is force of attraction and hence the separation of the loops in the coil decreases.
Q7 c) N(Ba) / N(Kr) = No e^-decay constant *t / No e^-decay constant *t
=> 8/1 = [e^ (-6.42*10^-4 * t) ] / [e^(-0.231t)]
Take Ln on both sides nd solve for t=9.0 sec

 

[periyasamy]

Q2 bii) W=mg
mg / gravitational force calculated in b( i)
=> (4*1.66*10^-27) * 9.81 / (2.49*10^-46)
=> 2.6*10^20
Q6 bi) The current in one loop pf wire produces magnetic field which is perpendicular to the current in the second loop. According to the Newton's Law, their is force of attraction and hence the separation of the loops in the coil decreases.
Q7 c) N(Ba) / N(Kr) = No e^-decay constant *t / No e^-decay constant *t
=> 8/1 = [e^ (-6.42*10^-4 * t) ] / [e^(-0.231t)]
Take Ln on both sides nd solve for t=9.0 sec

Guys i think the 1stpart is this ....
U need to know at bottom part,the fbd is like this tension-weight=centripetral force
so first up find the spring constant,,f=kx,,,k=5/1.8
tension=centripetraal force +weight
2.78(L-13)=mrw^2+5
L=17.2cm

 

[periyasamy]

Help in op-amp

If someone can tell me the way to draw Vout of op-amp ,
9b(i) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_41.pdf
same type of question of V out graph in w13
9b(ii) http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w13_qp_43.pdf

Help in op-amp

I think it looks like this for thhe 1st question.Confirm me if thats the answer.If It IS i will explain it to u....

 

[periyasamy]

Guys when u ask question,pls include the answer scheme....Thanks .....

 

[unique111]

Somebody, please help?
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_42.pdf
Question 4ai and ii)
Question 1cii) why is change in gravitational potential energy=Fx?

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_41.pdf
Ques 4b) and 1c)

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s10_qp_42.pdf
Ques 5bii)

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s10_qp_41.pdf
Ques 4bii)

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s08_qp_4.pdf
Ques 4c)

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s07_qp_4.pdf
Ques 4cii)

 

[sitooon]

periyasamy
Thats the markscheme answer :
graph: square wave
correct cross-over points where V2 = V1
amplitude 5 V
correct polarity (positive at t = 0)
So your answer is right , Plus dont forget plz to explain the second question too

 

[sitooon]

Guys when u ask question,pls include the answer scheme....Thanks .....

Its , easy .. when you want markcheme , just change " qp " in the link to " ms " and it will take you to the markscheme

 

[periyasamy]

Its , easy .. when you want markcheme , just change " qp " in the link to " ms " and it will take you to the markscheme

Thanks.Haha,nvr knew that.

 

[Yousif Mukkhtar]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s11_qp_41.pdf
Can some one explain q10 c) ii)

 

[zg.mirza95]

sorry bro tried but couldnt get an idea on transmitted intensity n reflected

 

[zg.mirza95]

y has the examiner written 0.018 its the coefficient

 

[hope4thebest]

Can anyone plz explain this? Ans is 9 V

 

[itallion stallion]

Can someone plz help me with this
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w11_qp_43.pdf
Q5A.thanks a lot?!

 

[sitooon]

Thanks.Haha,nvr knew that.

What about the explaination bro
Of the graph you drew and the next part(check above ) , i tagged you to tell you your answer was right
but you didnt explain the two questions

 

[unique111]

Somebody, please help?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_42.pdf
Question 4ai and ii)
Question 1cii) why is change in gravitational potential energy=Fx?

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_41.pdf
Ques 4b) and 1c)

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_42.pdf
Ques 5bii)

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_41.pdf
Ques 4bii)

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s08_qp_4.pdf
Ques 4c)

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s07_qp_4.pdf
Ques 4cii)

Somebody pleaasee help. sweetjinnah ? periyasamy