Physics: Post your doubts here!

[Tkp]

How ws Physics P2 guys?
It was simple but lenghty . The duration wasnt enough but it went awesome

hw was the ques?well cn u tell the ques please?

 

[mr_perfect]

how was physics paper 5 ppl ? did any1 of u give paper 5 ?

 

[confused123]

How ws Physics P2 guys?

It was simple but lenghty . The duration wasnt enough but it went awesome

yeah it wasn't hard. do able. it went fine for me..just not sure about some of the questions... 15 minutes more would be sufficient.

 

[Tkp]

or give any clue?did some descriptive ques came

 

[Most_UniQue]

yeah it wasn't hard. do able. it went fine for me..just not sure about some of the questions... 15 minutes more would be sufficient.

Yah 15min more would have been good

hw was the ques?well cn u tell the ques please?

No Sory

 

[sadman sakif]

please !!!!! those of you have given the exam please do posts the questions as my exam still has a 4hrs to start!!!!!!!! its gonna be really helpful!!!!!!!

 

[Soldier313]

hey could somebody please urgently help me with qn 7bii.)
qn paper: http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s10_qp_22.pdf

ms: http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s10_ms_22.pdf

please people urgent help needed....exam is just in 2 hrs pls tx

 

[Unicorn]

that wuz when there was 3/4 of a wavelengh in da tube... itsnot related to hear 1st loud sound u need 1 antinode in da tube which is 1/4 lamda nd u get a new lamda

oh ok
thanks

 

[Unicorn]

can anyone help me m/j 04 6bi,ii

black= constructive
orange destructive

 

[Unicorn]

please !!!!! those of you have given the exam please do posts the questions as my exam still has a 4hrs to start!!!!!!!! its gonna be really helpful!!!!!!!

it starts at same time in each zone

 

[MysteRyGiRl]

please !!!!! those of you have given the exam please do posts the questions as my exam still has a 4hrs to start!!!!!!!! its gonna be really helpful!!!!!!!

ppr discussion isnot alowed here b4 24 hours

 

[Oliveme]

can some one pls explain this ques? Question 5b (ii) why does the current have to be 40mA? I don't understand.
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s03_qp_2.pdf
http://www.xtremepapers.com/papers/...el/Physics (9702)/9702_s03_ms_1 2 3 4 5 6.pdf

 

[Unicorn]

Assalamu alaikum,
please solve these doubts and explain them before the exam. Thanks
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s06_qp_2.pdf
q.5 part b.... and q6. part b...

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s06_qp_2.pdf
Q.5. part b... and Q.6 part a...

q5b
w= f * s
f = k * x

therefore w= kx^2 since s is same as x

to show the answer simply find area from 0 to x2 and 0 to x1 and subtract

6a can't really draw it for you :\

6b
distance between 2 nodes is 0.5λ and distance is 32.4cm so λ= 64.8cm

s=f * λ therefore 512 * 0.648 = 332

 

[Soldier313]

can some one pls explain this ques? Question 5b (ii) why does the current have to be 40mA? I don't understand.
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s03_qp_2.pdf
http://www.xtremepapers.com/papers/...el/Physics (9702)/9702_s03_ms_1 2 3 4 5 6.pdf

bcoz previously it states at the beginning of the qn that the lamp functions normally at 6V and from the graph at 6V current is 40 mA
hope that helps...please help with my qn too....tx

 

[Unicorn]

hey could somebody please urgently help me with qn 7bii.)
qn paper: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_22.pdf

ms: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_ms_22.pdf

please people urgent help needed....exam is just in 2 hrs pls tx

well i don't know the answer myself but judging from mark scheme mass is conserved as nothing is lost and i am assuming nitrogen particle is stationary so alpa particle must be moving to bombard it

 

[Soldier313]

well i don't know the answer myself but judging from mark scheme mass is conserved as nothing is lost and i am assuming nitrogen particle is stationary so alpa particle must be moving to bombard it

sis my qn is how did they get the MeV as 1.6x10^-13????

 

[Oliveme]

hey could somebody please urgently help me with qn 7bii.)
qn paper: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_22.pdf

ms: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_ms_22.pdf

please people urgent help needed....exam is just in 2 hrs pls tx

thank you

energy conserved means the total energy at the beginning is the same as total energy at the end no matter in what forms energy is present. so, the particle must have some sort of energy that it possesses for there to be conservation. hope you get it.

 

[Soldier313]

thank you

energy conserved means the total energy at the beginning is the same as total energy at the end no matter in what forms energy is present. so, the particle must have some sort of energy that it possesses for there to be conservation. hope you get it.

hey you are welcome.....but my qn is how did they get the MeV as 1.6 x 10^-3

 

[Oliveme]

sis my qn is how did they get the MeV as 1.6x10^-13????

1 eV = 1.6 x 10^-19 ---> the same as the elementary charge given in data sheet. so MeV would be 1.6 x 10^-19 x 1000 x 1000.

 

[Mad-Eye]

Is breadboard provided for electronic ciruit questions?