AS Physics P1 MCQs Preparation Thread.

[MysteRyGiRl]

View attachment 12924

View attachment 12925

how to these question? help

Q no 34 .. ughh i cnt upload da file

 

[ibadsiddiqi]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_12.pdf

q.9??????

You have to draw a tangent to the curve at that point..then you find out the gradient of that tangent which will be the acceleration

 

[Wanzi21]

Q no 34 .. ughh i cnt upload da file

lol okay.. it it correct to use R=pL/A?

 

[kinglynx]

Q 27 its D... it can either be A or D...it cant be A cz lines cant be parallel there
for 14 use Esin45..u dont have E so just use sin 45... and i dont exactly know hw 2 explain dis so sory

i dont really understand your explanation of Q27, can you try again?

And for 14, its fine i know how to do it now thanks

 

[N.M]

oh yeap D.. how did u get it? I thought 2x since 0.5lambda=x.. but not right

see as you throw the ball downwards the G.P.E converts into K.E
so mgh=1/2mu^2
make u the subject
(2mgh/m)^-0.5=u
u=(2mgh)^-0.5

then take out separately an expression for v
so u said that the ball rises half the height than b4
so 1/2mv^2=mgh/2
make v the subject
you will get this after simplification
v= (gh)^-0.5

now substitute the value of v and u in to
v/u
and u will get the answer

hope its clear now

 

[MysteRyGiRl]

lol okay.. it it correct to use R=pL/A?

lol yea will write it here but it wont be dat clear mayb...
R=pl/A so p=RA/l
Ry*(A/4)/4l = Rx*A/l
A and l gets cancelled out both da syds so ur left wd Ry/Rx=16/1

 

[xyz!]

can sum1 post the solution for this questn pls?

 

[MysteRyGiRl]

i dont really understand your explanation of Q27, can you try again?

And for 14, its fine i know how to do it now thanks

u wont get anything believe me...all i know is they can never be straight lines....my theory is sort of based on logic...u shud ask sm1 else 4 explanation

 

[Wanzi21]

lol yea will write it here but it wont be dat clear mayb...
R=pl/A so p=RA/l
Ry*(A/4)/4l = Rx*A/l
A and l gets cancelled out both da syds so ur left wd Ry/Rx=16/1

okay tq ^^ just wonder why is there A/4?? because of volume? actually I dont really get what is meant by same volume haha

 

[MysteRyGiRl]

okay tq ^^ just wonder why is there A/4?? because of volume? actually I dont really get what is meant by same volume haha

consider da formula V=A* l they said volume is same and its 4 tyms long...so V=A*4l...for V 2 be constant we divide A by 4 to cancel them out...umm is it clear?

 

[arkif rizan]

pls explain question 15 ........i dont get it
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_12.pdf

 

[Peter Check]

Why is C wrong??

 

[Soulgamer]

Why is C wrong??View attachment 12929

As value of R is inversely proportional to the value of I, Not the other way.

 

[Wanzi21]

consider da formula V=A* l they said volume is same and its 4 tyms long...so V=A*4l...for V 2 be constant we divide A by 4 to cancel them out...umm is it clear?

alright!! clear tq

 

[Soulgamer]

can sum1 post the solution for this questn pls?

To prevent further tightening, the resistive torque will be equal to moment when force F is applied. Hence 200 x 0.5= 50Nm

 

[mominzahid]

WHAT IS INTERNAL ENERGY?

 

[samwickz]

Great i officially suck @ physics so ya any 1 out there pretty plz help poor old me with this
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s06_qp_1.pdf
Q28
d ans is D

thanx a bunch

 

[MysteRyGiRl]

Why is C wrong??View attachment 12929

what is da asnwer?

alright!! clear tq

gud

WHAT IS INTERNAL ENERGY?

its in one of da pprs and da option is sort of obvious lol sory

 

[xyz!]

Why is C wrong??View attachment 12929

so what is the answer?

 

[samwickz]

WHAT IS INTERNAL ENERGY?

the total sum of KE and PE of d molecules