AS Physics P1 MCQs Preparation Thread.

[blabla]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_12.pdf Q26 anyone? pleeease i'm desperate! :'(

 

[m.r92]

hey guys, anyone remember which paper that question about emf was in that involved kirchoff's second law, and the answer was E-I1r1 - I2R2 -I3...something? any help is appreciatd

 

[Capricedcapri]

was it a joke..?? or you have variant papers of 2002..???

It's not a joke mr nd I mentioned " variant 1" ....just In case someone get confused n ask the variant number!!......

 

[Ashique]

Can someone please explain question number 12? http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_12.pdf

 

[umarashraf]

oh GOD am such a loser nae sory its dis ppr Q no 37
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_12.pdf

kheir... proton number will increase by 1 as an electron is emited... so new configuration will have now 4 protons... and the have asked neutrons.. not nucleon number... no. of neutron will be 8-4=4.. so option A has to be the correct one..

 

[MysteRyGiRl]

kheir... proton number will increase by 1 as an electron is emited... so new configuration will have now 4 protons... and the have asked neutrons.. not nucleon number... no. of neutron will be 8-4=4.. so option A has to be the correct one..

ohk thnx

 

[m.r92]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_12.pdf Q26 anyone? pleeease i'm desperate! :'(

at 18 second, the phase difference in 1/2 of the cycle, so at what time will the phase difference be 1/8? just try normal proportionation

 

[Capricedcapri]

Any one plz explain me 21 and 35 McQ of oct nov 2002.
help will b appreciated....( extremely desperate!!)

 

[blabla]

at 18 second, the phase difference in 1/2 of the cycle, so at what time will the phase difference be 1/8? just try normal proportionation

right, thanks! ahh i was freaking out

 

[m.r92]

and did you guys memorise the frequencies of the electromagnetic spectrum? or just the wavelengths?

 

[confused123]

The answer's 0.37m/s^2

What? The marking scheme has to be wrong or maybe I :/

 

[Capricedcapri]

R

and did you guys memorise the frequencies of the electromagnetic spectrum? or just the wavelengths?

Ronald McDonald is very ugly xcept Gary....( rMIVUXG) .....as wavelengths decreases from radio waves to gamma waves so their wave lengths are.... 10 power plus 2 ,10 power -2 ,10 power -4 ,10 power -6 ,10 power -8 ,10 power -10 and 10 power -12 ...

 

[Capricedcapri]

Any one plz explain 22 mcq of may June 2003!!

 

[bloody_mary]

Any one plz explain me 21 and 35 McQ of oct nov 2002.
help will b appreciated....( extremely desperate!!)

ms pleaseee

 

[geek101]

Any one plz explain 22 mcq of may June 2003!!

In the scenario given, each of the springs extents by x, and each gets a share of 1/3 W (F)
so put it in the equation F = kx, itll be 1/3F = k x
k = F/3x (this will be the k for all the springs since they are the same)
now in the next case....the remove one spring and double the W
so now each spring gets 1W (F)
substitute k with the value you found before
F = (F/3x) extension
extension = F / (f/3x) = 3x , tadaa!

 

[Capricedcapri]

ms pleaseee

21 C and 35 D

 

[Capricedcapri]

In the scenario given, each of the springs extents by x, and each gets a share of 1/3 W (F)
so put it in the equation F = kx, itll be 1/3F = k x
k = F/3x (this will be the k for all the springs since they are the same)
now in the next case....the remove one spring and double the W
so now each spring gets 1W (F)
substitute k with the value you found before
F = (F/3x) extension
extension = F / (f/3x) = 3x , tadaa!

Wao! That was easy....after u explained...thanks a lot genius!!: D

 

[bloody_mary]

Any one plz explain 22 mcq of may June 2003!!

f=kx
when all 3 springs are attached they share the load of W
so each spring carries 1/3 of W
so for 1 spring W/3 =kx so K of one spring is W/3x

having 2 springs means 2(w/3x) which is 2w/3x

now the weight is 2w
so 2W = 2w/3x * x ' so x' is 3x

 

[ullahabd]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_12.pdf
guys i need the explanation for Q17, Q33, Q34
THANKS

 

[malik234]

Q 2
you have horizontal component 20 and angle 30 so use tan
tan 30 = x/20 x =11.5

Q10
well first right what we will now
so X: 0.5mv^2=E
and Y: has 0.5*2m*l^2 (l is the speed because it can't be same as X has)
since it is an explosion they both have same KE so will try to find l for Y
so l= sqrt(E/m)
v= sqrt(2E/m) now divide l by v so we get l is sqrt(0.5)*v

no put l back in equation for Y and we get 0.25mv^2
and X will be 0.5mv^2

now divide X by Y to get 2/1

Q11
answer is A because P has to be less than R for upthrust to take place and S+ Q play no role in upthrust so are equal

Q14
answer is C
first find units of K from F/V^2 which is kg/m

then compare it with answer to get C

thanku