Physics: Post your doubts here!

[Namehere]

Can someone draw the diagram ?

View attachment 38614

Could you tell me which year it is?

 

[Thought blocker]

Can someone draw the diagram ?

View attachment 38614

I dont why today all are asking doubts related to A2 level

 

[Namehere]

I dont why today all are asking doubts related to A2 level

whats wrong about it?

 

[Thought blocker]

whats wrong about it?

Nothing...

 

[sitooon]

Could you tell me which year it is?

I picked a random year , it says in mark scheme as i remember to draw : lamp with .. " forgot "
try it and lets see how it will be

 

[Autumngirl]

Can someone please explain why the answer to q37 of p1 mj2007 is C? I would really appreciate it if someone replies before Thursday as I have to appear for an exam on Thursday!

 

[midha.ch]

Can anyone help me with question 2?

 

[Thought blocker]

Can anyone help me with question 2?

Is this you midha.ch ?

 

[midha.ch]

Is this you midha.ch ?

Nope my ghost -_-
Help karo with your Physics brain!!!!

 

[Thought blocker]

Nope my ghost -_-
Help karo with your Physics brain!!!!

As level student hu...
sagar65265
Suchal Riaz

 

[daredevil]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_ms_42.pdf

Please explain q8 parts b and c ........

 

[midha.ch]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_ms_42.pdf

Please explain q8 parts b and c ........

I think it would be helpful if you read the attached files once. you can skip the half-life part
few things not included are,
The rate of decay is proportional to number of particles present

dN/dt ∝ N

dN/dt = -λN

part (b) asks for probality of rate of decay

part (c)(i) asks for the inittial activity and it can easily be found by the formula
part (c)(ii)
If A = λN

Then, A0 = λN0
find N0
then using
N0/NA =M/Mr

Where NA = Avogadro’s constant

Find M

 

[sudeep1097]

I don't understand mark scheme for drawing the circuit. Can anyone help me with drawing that and i don't understand why the terminals of external circuit is attached to the earthing.

No one has replied to this.. anyone???

 

[Thought blocker]

No one has replied to this.. anyone???

midha.ch
ZaqZainab
Suchal Riaz
sagar65265
sitooon

 

[ZaqZainab]

midha.ch
ZaqZainab
Suchal Riaz
sagar65265
sitooon

i am an AS student too

 

[Thought blocker]

i am an AS student too

Woops! Okay...

 

[sitooon]

For a single discharge , whats the average potential difference ?
it should be 1.6 , but the answer is 3.2

 

[Suchal Riaz]

I am AS too

 

[Faizan Muhammmad]

View attachment 38632
For a single discharge , whats the average potential difference ?
it should be 1.6 , but the answer is 3.2

look at the scale again
its n0t 1,2..
but 2,4..

 

[Suchal Riaz]

Can anyone help me with question 2?

they would give you the apparatus so you will decide like that. if you send me the confidential instructions of that year i can tell you how it has to be done. ok?