AS Physics P1 MCQs Preparation Thread.

[hela]

HELP QUESTION 5

 

[Sheikh Nahiyan]

HELP
I NEED QUESTION 5 THIS PAPER

First variant paper or second variant paper?

 

[sweetjinnah]

I have some problems..!

October-November 2011. Paper 11. Question no. 29. Question no. 30. I am not getting it at all! Can anyone please explain it?

May-June 2011 Paper11. Question no. 13. Also help me in this one. Followed by question no. 14

May june 2011 variant 11:
30. v/d=F/Q
=> (12*10^3)/(25*10^-3) = F/(1.6*10^-19)
=> F= 7.7*10^-14 N THE ANSWER SHOULD B D.

 

[hela]

CAN U SOLVE PLEASE

 

[Lyfroker]

can some1 plz explain me the following:
q# 21 and 36
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w05_qp_1.pdf

 

[Lyfroker]

explain the following please
q# 7, 9, 25, 29 and 36
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s05_qp_1.pdf

 

[Meesam]

lo

can some1 plz explain me the following:
q# 21 and 36
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_w05_qp_1.pdf

this goes on like this..!
For 36:
V=IR

total rsistance=450
voltage=6
V=IR
I=>6/450=0.013

VOLTAGE IN 180 resistor
V=IR
V=0.013*180=2.4 volts

Or simply do proportionaly= 180/450 * 6
=2.4
For 21

k=F/e=7.5
e=extention
young modulus =F/e * l/A
making F/e the subject
young modulus is constant

F/e is directly proportional to A
F/e is inversly proportional to l

A=PIE (diemeter/2)^2
diameter is half = (diameter/4)^2=diameter/16
therefore K(F/e) will divided by 4.as its directly PROPORTIONAL related

l will be l/4 therefore..K will increase INVERSLY, multiplying by 4..!
It will lead to the valiue of K same as 7.5...
so wxtentions remains same..! as 8mm

Hope u undersatand..!i made a bit complicated..!

 

[h4rriet]

CAN U SOLVE PLEASE
View attachment 27241

The principle of conservation of momentum says that the initial momentum must = the final momentum.
The initial momentum = 2mu-mu=mu.
Momentum in A, C and D = mu.
Momentum in B = 0.33333. Therefore B is inconsistent with the principle of conservation of momentum.

 

[h4rriet]

explain the following please
q# 7, 9, 25, 29 and 36
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s05_qp_1.pdf

7. Gravitational force is always down, so g must always be down since it's constant and it must always be negative since they say that upwards must be positive.
9. In parabolic motion, the horizontal component of the velocity stays constant, therefore the horizontal acceleration is always zero.
25.

29.

36. R and 2R get the same amount of voltage because they're connected in parallel. They don't get full voltage because there's a resistor connected in series to the battery; this resistor in series takes V1 volts from V volts; what's left goes to the rest of the circuit. Therefore, V-V1=V2 and V-V1=V3.

 

[h4rriet]

anyone cud help me with
QUESTION 5

The gradient of a displacement-time graph is the speed/velocity. Acceleration is change in velocity. The question says that acceleration decreases; that means we can rule out B because it shows deceleration. Next the question says that the ball eventually reaches terminal velocity; that is, a constant speed. A constant speed on a displacement-time graph is shown by a non-horizontal straight line (non-horizontal because if it is horizontal, its gradient will = 0 and that'll mean that the speed is o). C can be ruled out because it shows a horizontal line, B can be ruled out because it doesn't show a straight line at all. The answer is D.

 

[Lyfroker]

lo

this goes on like this..!
For 36:
V=IR

total rsistance=450
voltage=6
V=IR
I=>6/450=0.013

VOLTAGE IN 180 resistor
V=IR
V=0.013*180=2.4 volts

Or simply do proportionaly= 180/450 * 6
=2.4
For 21

k=F/e=7.5
e=extention
young modulus =F/e * l/A
making F/e the subject
young modulus is constant

F/e is directly proportional to A
F/e is inversly proportional to l

A=PIE (diemeter/2)^2
diameter is half = (diameter/4)^2=diameter/16
therefore K(F/e) will divided by 4.as its directly PROPORTIONAL related

l will be l/4 therefore..K will increase INVERSLY, multiplying by 4..!
It will lead to the valiue of K same as 7.5...
so wxtentions remains same..! as 8mm

Hope u undersatand..!i made a bit complicated..!

yup i got it, thank u so much

 

[Lyfroker]

7. Gravitational force is always down, so g must always be down since it's constant and it must always be negative since they say that upwards must be positive.
9. In parabolic motion, the horizontal component of the velocity stays constant, therefore the horizontal acceleration is always zero.
25.

29.

36. R and 2R get the same amount of voltage because they're connected in parallel. They don't get full voltage because there's a resistor connected in series to the battery; this resistor in series takes V1 volts from V volts; what's left goes to the rest of the circuit. Therefore, V-V1=V2 and V-V1=V3.

thanks a lot

 

[hela]

can anyone solve
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_12.pdf Q 10 AND Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_12.pdf Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_11.pdf Q29
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_13.pdf Q11
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w11_qp_11.pdf Q14

THANKS FOR YOUR HELP

 

[hela]

can anyone solve
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_12.pdf Q 10 AND Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_12.pdf Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_11.pdf Q29
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_13.pdf Q11
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w11_qp_11.pdf Q14

 

[hela]

can anyone solve
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_12.pdf Q 10 AND Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_12.pdf Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_11.pdf Q29
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_13.pdf Q11
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w11_qp_11.pdf Q14

THANKS FOR YOUR HELP

please can anyone solve these questions

 

[ahmed abdulla]

7. Gravitational force is always down, so g must always be down since it's constant and it must always be negative since they say that upwards must be positive.
9. In parabolic motion, the horizontal component of the velocity stays constant, therefore the horizontal acceleration is always zero.
25.

29.

36. R and 2R get the same amount of voltage because they're connected in parallel. They don't get full voltage because there's a resistor connected in series to the battery; this resistor in series takes V1 volts from V volts; what's left goes to the rest of the circuit. Therefore, V-V1=V2 and V-V1=V3.

bro how do u attach files ?

 

[Rahma Abdelrahman]

Please can u help with the following:
All from June 2011 P11 , may be some of them are a bit silly but I need help in them..
Q9, 15, 16, 25, 31 and 34

 

[Rahma Abdelrahman]

bro how do u attach files ?

Yeah.. how??

 

[h4rriet]

bro how do u attach files ?

Yeah.. how??

You right-click 'reply' then click 'open in a new tab' and under the box you'll see 'upload a file'.

 

[Rahma Abdelrahman]

can anyone solve
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_12.pdf Q 10 AND Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_12.pdf Q33
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_11.pdf Q29
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_13.pdf Q11
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w11_qp_11.pdfQ14

Nov 2012 P12:

Q10 --> I guess here u dont know why It's D and not C.. ok, As it is an example of projectile motion, u know the horizontal component of velocity is constant so there must be some velocity all the time (at least the horizontal, when there is a horizontal component >0 then obviously there will be a resultant) so velocity is not zero..
Q33--> u know that a helium NUCLEUS has charge of +, double that of a proton BUT it has more mass.. having greater mass of, it will show less deflection, Answer is therefore C.
June 2012 P12 -- > The wire with the small diameter has more Resistance, hence more pd and so particles will flow faster as higher pd. means that more energy is supplied (more energy to push the particles, more speed)
Nov 2012, P11 --> There should be more points on to which the light strikes so it's either B or C, but hence in C the lines are closer, there is more intensity
Nov 2012, P13 --> Check the uploaded file
Nov 2011 P11--> First u have to find the perpendicular distance between the 2 forces.. which is 0.3 sin (50) and u multiply it by 2 (one of the forces) to get 0.4596 rounded to 0.46 which is C..

Please if I am wrong about something correct me