Physics: Post your doubts here!

[Anika Raisa]

Stuck badly please help!! May u be blessed for helping! Dnt knw ans to it!


1. Describe the changes to the kinetic energy, the potential energy and the total internal energy of a block of ice as:
i. it melts at 0oC
ii. the temperature of water rises from 0oC to room temperature.

 

[Anika Raisa]

Help here pleeeease https://www.xtremepapers.com/commun...here-please-for-a2-physics.25969/#post-536549

 

[hassanhijazi1995]

hey everyone i really want ur help cuz am kind of lost......

now my aim in physics A'level is A* which has an average curve of 175 total of 5 papers....

some ppl say that they did very well nd ended getting B or C
my least marks that i usually score are as follows...

p.1 28. p.2. 40. p.3 30. p.4 50. p.5 20.

rlly need your helpppp
are these marks good for A* ??????

 

[Anika Raisa]

hey everyone i really want ur help cuz am kind of lost......

now my aim in physics A'level is A* which has an average curve of 175 total of 5 papers....

some ppl say that they did very well nd ended getting B or C
my least marks that i usually score are as follows...

p.1 28. p.2. 40. p.3 30. p.4 50. p.5 20.

rlly need your helpppp
are these marks good for A* ??????

it all depends on the grade threshold!!!

 

[Soldier313]

Aoa wr wb
Can someone please help me with these?
3 c ii ,
5 b
6 a and b i

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s08_qp_4.pdf
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s08_ms_4.pdf

JazakAllah khair
Thanx a ton

 

[freezingfires]

PhyZac or anyone else please please help me with October November 2010 paper 42 Q2b iii the energy change cycle,Here is the link:

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_42.pdf

 

[TaffsAsLevel]

Advantages of a.c anyone? all list?

 

[TaffsAsLevel]

PhyZac or anyone else please please help me with October November 2010 paper 42 Q2b iii the energy change cycle,Here is the link:

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_42.pdf

I think from R to P is because the whole cycle should get the sum equals zero, but I don't know why Q to R is zero, It's not in any book about this PV graphs =/

 

[TaffsAsLevel]

Aoa wr wb
Can someone please help me with these?
3 c ii ,
5 b
6 a and b i

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s08_qp_4.pdf
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s08_ms_4.pdf

JazakAllah khair
Thanx a ton

for 3 c ii provide the same wave exactly identical but decreasing amplitude
5 b draw 4 capacitors, 2 and 2 in parallel

for 6 a parallel because then you would want force to be perpendicular to the magnetic field and with current use left hand rule

6 b i torque is Fd ofcourse the distance between the forces and you're given torque, that's an easy one how come you can't do it?

 

[Soldier313]

for 3 c ii provide the same wave exactly identical but decreasing amplitude
5 b draw 4 capacitors, 2 and 2 in parallel

for 6 a parallel because then you would want force to be perpendicular to the magnetic field and with current use left hand rule

6 b i torque is Fd ofcourse the distance between the forces and you're given torque, that's an easy one how come you can't do it?

hey
Thanx for the answers.

i know the qns i asked seem relatively simple, but the problem is this for the first 2, i wanted to compare my diagrams with drawn ones from someone else.
For the third qn i asked, i attempted using the left hand rule, but somehow i just couldn't figure out the answer

For the last qn i asked, the torque thing, i couldn't figure out why we were using the length 2.8 rather than 4.5

I will look at the qns again though. Thanx a lot for your help.

 

[TaffsAsLevel]

any body can do June 2002 for me on alternating current? what is the relationship between emf and current against time graph how can we compare? please somebody?

 

[aleezay]

yes but in the ms some times the raw data has variable sig some of two and some 3 . i become confused then

You're right, but they wont deduct your marks.. late reply, i know, but this might clear your confusion for P3

 

[A star]

You're right, but they wont deduct your marks.. late reply, i know, but this might clear your confusion for P3

 

[Jiyad Ahsan]

http://alikhan3.hubpages.com/hub/A-Level-Physics-Formula-Sheet
all the formulas for as and a2 physics that you'll need.. thought this would help you guys out as you practice

 

[no.mercy]

Can someone do this whole question, please?

 

[InternationationalGuy]

Question: How do we connect any circuit correctly?
Please tell me ways to do so. Thank you.

 

[hassanhijazi1995]

hey guyz how have u done in phy..p21 2013
can any one post all the correct answers plz?
will be appreciated

 

[freezingfires]

I think from R to P is because the whole cycle should get the sum equals zero, but I don't know why Q to R is zero, It's not in any book about this PV graphs =/

Yes it is confusing!! the marking scheme has different values of heat supplied to the gas!....is there an error in the question??

 

[MaxStudentALevel]

https://www.xtremepapers.com/community/threads/physics-p4-guess-questions.26021/
HEY GUYS check out this thread above its for GUESS questions and feel free to contribute!

ALSO the one below for tricky PastPaper Questions!
https://www.xtremepapers.com/community/threads/physics-paper-4-past-paper-discussion.26111/

 

[TaffsAsLevel]

Yes it is confusing!! the marking scheme has different values of heat supplied to the gas!....is there an error in the question??

It is not mentioned in books, I heard the area is the work done