Physics: Post your doubts here!

[raamish]

can any1 explain qs5 and qs6c to me.
S09: http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s09_qp_2.pdf

 

[queen of the legend]

anyone having a doubt in paper 2 for AS can contact me but plss post the question paper and mark scheme along!

 

[zephyr86]

hi.can anyone solve m/j/10/21 q 2(b)ii?
Thanks.

 

[queen of the legend]

Hey ppl in paper 2 sometimes there is a number involving estimates of certain things for e.g the mass of a protractor- 10 g
could someone just list some quantities whose value must be learnt

there are no specific quantities that should be learnt as i have been told ....i think you just have to guess them and i think its just stupid

 

[queen of the legend]

can any1 explain qs5 and qs6c to me.
S09: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_qp_2.pdf

which variant do you mean and please post the mark scheme along !

 

[queen of the legend]

anyone gonna help......plzzzzzzzzzzzz

post your question please!

 

[queen of the legend]

hi.can anyone solve m/j/10/21 q 2(b)ii?
Thanks.

draw tangent to the curve at 0.4s and find out the gradient that is equal to speed.

 

[xyz!]

guys m posting dis fr the 2nd tym..sum1 pls help..
dis is a doubt regarding paper 5
here's the link..
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_51.pdf
can sum1 pls draw the diagram(a labelled one pls) fr the first question and attach it..?? i read the ms but m not able to undrstnd!

 

[queen of the legend]

Can someone Please Please Please answer my Question's (it got ignored 3 times)

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_23.pdf
7bii) I don't get why charged particle is not an isolated system

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_13.pdf
29) I just don't understand the question, I looked at examiners report and it said that the lines R to S has a constant phase difference


I will thank you a lot

for question 7bii : its very easy . if you were able to solve 7 part a then part b is just continuation. ok we know that change in momentum (delta)P= F x (delta) t
so just substitute part a ii for delta P .
you already got F= Eq , and t= L/v ...........so , (delta P = F.t )
that is P= EqL/v as simple as that !

for question 29 ; interference pattern is observed on the viewing screen which if you think more about the diagram is XY. so answer is C !! you dnt need to calculate or think about phase relationship !

 

[bamteck]

anyone having a doubt in paper 2 for AS can contact me but plss post the question paper and mark scheme along!

What about P4 ?

 

[champ-student]

post your question please!

HOW TO FIND VECTORZZZZ???????????????????

 

[Kirabo Takirambudde]

Sorry, but what is the likelihood of a question being repeated in O/N this year that appeared in either may/june of this year or in either both sessions last year?

 

[champ-student]

how to find vectorzzzzzzzzzzzzz?????????

 

[Muhammad Talha]

Use displacement/time at each of the times 20,40,60,80,100 keep in mind that after 50s velocity is negative. Plot values of velocity, draw your graph. Done

Thank you so much...

 

[geek101]

qp: http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s09_qp_2.pdf

ms: http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s09_ms_2.pdf

question 2, how do you find the ke after for ball B, isnt the speed of separation 0.8, then why in the world does the ms say 2.4 ? feeling like an air head!

THANKS!

 

[queen of the legend]

qp: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_qp_2.pdf

ms: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_ms_2.pdf

question 2, how do you find the ke after for ball B, isnt the speed of separation 0.8, then why in the world does the ms say 2.4 ? feeling like an air head!

THANKS!

speed of separation is actually difference in velocities of ball S and B . velocity of B = -0.8 , and Velocity of S= 1.6
so, 1.6 - (-0.8) = 2.4

 

[queen of the legend]

how to find vectorzzzzzzzzzzzzz?????????

be specific please! if you have a question you dont understand post it down

 

[geek101]

speed of separation is actually difference in velocities of ball S and B . velocity of B = -0.8 , and Velocity of S= 1.6
so, 1.6 - (-0.8) = 2.4

uhum why?

 

[Minato112]

how to find vectorzzzzzzzzzzzzz?????????

By vectors u mean vector diagrams?

 

[champ-student]

I know noting bout vectors.......
i know only a couple of formulae: Fx=F cos theta , Fy=F sin theta
need help