AS Physics P1 MCQs Preparation Thread.

[MysteRyGiRl]

im nt sureeee abt 13 :/

me too am not getting zero anywhere

 

[Sana101]

Can someone please help me with Q 16 AND 17! Both answers are C!

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_12.pdf

 

[Most_UniQue]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_12.pdf

Need help ASAP in q's 8 , 9 , 25 , 27

Thanks

 

[Sana101]

Please help
Q) 14 15 19
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_11.pdf

 

[MysteRyGiRl]

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

Need help ASAP in q's 8 , 9 , 25 , 27

Thanks

Q no 8 it can only be A or B and as air resistance is actingthe fall will be slow so its B
Q no 9 av.acc =(v-u)/t and multiply it by 2 as its average acceleration
doing rest

 

[applepie1996]

Please help
Q) 14 15 19
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_11.pdf

Q14)1/2mu^2=mgh
m gets cancelled so u^2=2gh take 2g as k which is constant
so h is divide by 2 so u^2/root of 2
so v^2=u^2/root2
so 1/root2
dunt noe if its correct just did it
Q19) u first find the mass of each individual 1000 x 1.5=1500kg and 800 x 0.5=400kg
add the masses up =1900kg volume=2 so density =1900/2=950

 

[SalamH]

i solved a question where they are asking abt da strain energy and i used 1/2 fx and da answer is c0ming ryt :S

cud u pls show me da ques coz dis is wat ma txt bk says

 

[omg]

me too am not getting zero anywhere

and it was dat force extension qs where i said that 2N is the force!!

 

[omg]

cud u pls show me da ques coz dis is wat ma txt bk says

yeah area under the force extension graph = strain energy, as far as i know!

 

[MysteRyGiRl]

cud u pls show me da ques coz dis is wat ma txt bk says

june 2007

and it was dat force extension qs where i said that 2N is the force!!

but no1 explained when we use which 1

 

[Most_UniQue]

Q no 8 it can only be A or B and as air resistance is actingthe fall will be slow so its B
Q no 9 av.acc =(v-u)/t and multiply it by 2 as its average acceleration
doing rest

didnt get q9:/ it asks fr kinetic energy and cn u xplain q8 in more detail

 

[omg]

june 2007

but no1 explained when we use which 1

i always use 1/2fx and get the ans ryt!!
area under the force extension graph = strain energy.
i dun think u need to get the spring constant k.it would b tym consumin

 

[leosco1995]

leosco1995 pls where are u ??

Dude I am so sorry I have gone through a number of RL problems yesterday and today that I didn't even use XPF that much. Are these your queries?

 

[Sana101]

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

Need help ASAP in q's 8 , 9 , 25 , 27

Thanks

8- find individual speeds
40/12= 3.3 40/6=6.6
Average time = 12+6/2 = 9
Acceleration = 6.6-3.3/9 = 0.37

25- one open end = f
two open ends = 2f

27- substitute random values of 'a' and 'D' such that lambda = 600
double your choosen values. and then calculate 'x'

 

[MysteRyGiRl]

i always use 1/2fx and get the ans ryt!!
area under the force extension graph = strain energy.
i dun think u need to get the spring constant k.it would b tym consumin

ohk thnx

 

[Oliveme]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_12.pdf
Please help me with these questions. 8, 9, 12, 14, 15, 22 and 25. Thank you very much.

I would appreciate it if one od you could help me with these. thank you.
here the ms - http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_ms_12.pdf

 

[omg]

ohk thnx

nytym

 

[waleedsmz]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_11.pdf
Q no 11 and 13 too plz

im nt sureeee abt 13 :/

13 is pretty easy. 5, 4 and 3 can make a closed triangle, meaning that it can be in equilibrium if acting on one point. Hence resultant force is zero and answer is A.

 

[omg]

I would appreciate it if one od you could help me with these. thank you.

sm1 solved this qs so just copyin
q.8.- find individual speeds
40/12= 3.3 40/6=6.6
Average time = 12+6/2 = 9
Acceleration = 6.6-3.3/9 = 0.37

q.9.i did it lyk the momentum before collision would b 2mv and aftr collision -2mv,
and change in momentum=2mv-(-2mv) =4mv
but they say dat the collision inelastic so there shoulv been a dec in speed so i choz 3mv.
dunno if this concept it ryt or not.
would appreciat if sm1 could explain it in a better way.

q.12, torque=f x d
200 x .25 => 50Nm

q.14, im gettin the ans 75, so i thout maybe there is sm prob wid the values :/

q.15, they say that the raindrop is falling wid constant speed which means the resistive force 'kv' = the weight 'mg'
so , v=mg/k
k.e= 1/2mv^2
substitute the value of v=mg/k and u get the ans D.

 

[MysteRyGiRl]

13 is pretty easy. 5, 4 and 3 can make a closed triangle, meaning that it can be in equilibrium if acting on one point. Hence resultant force is zero and answer is A.

umm cud u plz elaborate thora sa?? :S where do we get zero from? and can u solve Q no 15 too from da same ppr? thnx