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Physics: Post your doubts here!

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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* ??????
 
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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!!!
 
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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?
 
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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.
 
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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?
 
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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 :)
 
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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??
 
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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.

Mind helping me with June 2002 for alternating current?
 
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