Physics: Post your doubts here!

[Browny]

Can anyone please give me some notes on the potentiometer and it various functions as measuring a EMF of a battery, comparing EMFs of 2 batteries?

 

[Saad Mughal]

Can anyone please give me some notes on the potentiometer and it various functions as measuring a EMF of a battery, comparing EMFs of 2 batteries?

David Sang, Physics Coursebook.
Page 189. Probably the best concise details (according to the syllabus) you'll find on the topic.

 

[AnujaK]

Hi everyone
I've started a site which will provide you with solved papers showing working and with tips on the side. Please do check it out! https://sites.google.com/site/fromatoscom/home

 

[saqib.tariq]

Hi everyone
I've started a site which will provide you with solved papers showing working and with tips on the side. Please do check it out! https://sites.google.com/site/fromatoscom/home

gr8 work

 

[Thought blocker]

Question 5 bii) iii) iv)

 

[AnujaK]

Thank you very much I appreciate your feedback

gr8 work

 

[Browny]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_21.pdf

Can anyone explain why 0.4s is wrong for 3)b)ii) ?

 

[Suchal Riaz]

the reason is a little but difficult to grasp but i will try to explain.

as you can see the change is length is maximum at zero second, when the mass is pulled not when it is compressed because:
at 0.0 s and 8.0 s
e=initial extension due to mass + d
at 0.4 s
e=d-initial extension due to mass
so when the extension is highest the spring has highest elasic potential energy.

 

[Suchal Riaz]

Question 5 bii) iii) iv)

of which paper rohan

 

[Thought blocker]

the reason is a little but difficult to grasp but i will try to explain.
View attachment 41685
as you can see the change is length is maximum at zero second, when the mass is pulled not when it is compressed because:
at 0.0 s and 8.0 s
e=initial extension due to mass + d
at 0.4 s
e=d-initial extension due to mass
so when the extension is highest the spring has highest elasic potential energy.

Mere bhi doubt solve kardo

 

[Thought blocker]

of which paper rohan

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_23.pdf
Its easy but I forgot some few concepts :'(

 

[Suchal Riaz]

Mere bhi doubt solve kardo

konse doubt. aap ka nokar hun hukam karo

 

[Thought blocker]

konse doubt. aap ka nokar hun hukam karo

LOL ARE YOU FREE ?

 

[DeViL gURl B)]

Aoa,
Guys if anyone of u have COMPLETE PHYSICS DEFINATIONS FOR AS Level ... Please share!
As well as the best and detailed explanation for projectile motion ... Would be well appreciated
URGENT HELP PLEASE!
Thank you

 

[Suchal Riaz]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_23.pdf
Its easy but I forgot some few concepts :'(

 

[Suchal Riaz]

LOL ARE YOU FREE ?

no i am not free but always free to help

 

[Thought blocker]

no i am not free but always free to help

can u inbox me

 

[Thought blocker]

View attachment 41690

Y u used in part ii) IV and in part iii) I^2R ?

 

[Suchal Riaz]

can u inbox me

what do u want?

 

[Thought blocker]

what do u want?

Wait I'll inbox you.