AS Physics P1 MCQs Preparation Thread.

[arlery]

cant da answer be A ?

No because then the particle would be moving AWAY from the field so repulsive force will become weaker.

 

[MysteRyGiRl]

No because then the particle would be moving AWAY from the field so repulsive force will become weaker.

no am talking abt da amplitude question...
can u plz solve dis one too?
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_11.pdf
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_ms_11.pdf
Q no 34...ans is C

 

[arlery]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_ms_12.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_12.pdf
any1 there???? i need help hereee ppl
Q no 17, 26 and 31........

XPFMember Q 17?
:$

 

[arlery]

no am talking abt da amplitude question...
can u plz solve dis one too?
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_11.pdf
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_ms_11.pdf
Q no 34...ans is C

Resistance in 1 wire of 800m = .005 * 800 = 4 ohms
resistance in 2 wires = 4 ohms * 2 = 8 ohms
V = IR = 0.6 * 8 = 4.8 V
Min voltage = 16 + 4.8 = 20.8 V

 

[MysteRyGiRl]

Resistance in 1 wire of 800m = .005 * 800 = 4 ohms
resistance in 2 wires = 4 ohms * 2 = 8 ohms
V = IR = 0.6 * 8 = 4.8 V
Min voltage = 16 + 4.8 = 20.8 V

thank u soo much !!

 

[CaptainDanger]

XPFMember Q 17?
:$

Perpendicular =80/2 =40 mm

Find the angle.
Sin Θ = 40/50= 53.1°

As there are two tensions both equal, so Force = 2(cos 53.1 x 4) = Answer

 

[bloody_mary]

XPFMember Q 17?
:$

i think i got this
the tension in the elastic is 4N right? (you don't divide tension by 2 just because trolley is in cneter)
and since it is elastic it will move the 3omm as give by diagram and 30 mm more after YZ

and 50mm=4N
so 60mm=x

so 60*4/50 =4.8

 

[bloody_mary]

Perpendicular =80/2 =40 mm

Find the angle.
Sin Θ = 40/50= 53.1°

As there are two tensions both equal, so Force = 2(cos 53.1 x 4) = Answer

isn't the angle 45 anways? because if you draw parallegram of forces that is what i get

 

[MysteRyGiRl]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_11.pdf
Q no 37 da answer is A but how is it A :S plz help

 

[bloody_mary]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_11.pdf
Q no 37 da answer is A but how is it A :S plz help

because if you look in the diagram you will find that the voltmeter is connected in parallel with the battery if you ignore the batteries so no matter what the resistance is the voltage is always 4V

 

[CaptainDanger]

isn't the angle 45 anways? because if you draw parallegram of forces that is what i get

Erm. I don't think so.

 

[arlery]

Perpendicular =80/2 =40 mm

Find the angle.
Sin Θ = 40/50= 53.1°

As there are two tensions both equal, so Force = 2(cos 53.1 x 4) = Answer

Ohh okay, thanks!

 

[MysteRyGiRl]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_12.pdf
Q no 5.... ans is D :/

 

[XPFMember]

Aoa!

can someone plz tell me how to do this
jazakAllah khairen

 

[bloody_mary]

Erm. I don't think so.

it is a square with pythogrean triples 30,40,50 how can't it be 45??

at first i got 53.1 but the answer kept coming out wrong :S

 

[XPFMember]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_12.pdf
Q no 5.... ans is D :/

Aoa wr wb!

x = 1.27 – 0.83 =0.44
delta x = 0.02 + 0.01 = 0.03

percentage uncertainty = 0.03/0.44 x 100 = 6.8 = 7% to 1 sf

 

[CaptainDanger]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_12.pdf
Q no 5.... ans is D :/

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_12.pdf

Q no 5.... ans is D :/

x = P- Q = 1.27 - .83= .44
Uncertainty adds together = .02 + .01 = .03
Percentage uncertainty = (.03/.44)100 = Answer to one significant figure.

 

[bloody_mary]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_12.pdf
Q no 5.... ans is D :/

follow these steps and you should get right answer:
when adding or subtracting 2 quantities add absolute error
when mulitplying or dividing add percentage error
when a quantity is to the power of something multiply power to percentage error

 

[MysteRyGiRl]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_12.pdf
Q 14 too plz ans is D

 

[CaptainDanger]

View attachment 13046 it is a square with pythogrean triples 30,40,50 how can't it be 45??

at first i got 53.1 but the answer kept coming out wrong :S

Diagram in question is not to scale.