Solved physics Paper 5??

[Soldier313]

thank you ... for example if we have like this ? wat should we do ?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s10_qp_52.pdf

it Q2 (b) - the table

thanks again

okay for the first value of t, which is 18.9 +/- 0.1
so the periodic time is 1.89 and if you square the periodic time, you obtain T^2 = 3.57
now here, firstly, you will need to consider the errors in periodic time, so:
if
(uncertainty in t) / t = (uncertainty in T) / T
We obtain a constant uncertainty in T for all the values in the table and this is 0.01
There after we calculate the uncertainty in T^2,

this will be: (uncertainty in T^2) / T^2 = ( uncertainty in T x 2)/ T
therefore, for eg if we are using the first value
(uncertainty in T^2) = [ (0.01 x 2) / 1.89 ] x 3.57
hence you'll obtain 0.04
Hope that helped!

 

[Silent Hunter]

okay for the first value of t, which is 18.9 +/- 0.1
so the periodic time is 1.89 and if you square the periodic time, you obtain T^2 = 3.57
now here, firstly, you will need to consider the errors in periodic time, so:
if
(uncertainty in t) / t = (uncertainty in T) / T
We obtain a constant uncertainty in T for all the values in the table and this is 0.01
There after we calculate the uncertainty in T^2,

this will be: (uncertainty in T^2) / T^2 = ( uncertainty in T x 2)/ T
therefore, for eg if we are using the first value
(uncertainty in T^2) = [ (0.01 x 2) / 1.89 ] x 3.57
hence you'll obtain 0.04
Hope that helped!

yeah thanks alot ..... i also did the same and the blue part ? how many s.f. should be there? am always confused ?

thanks again

 

[Ahmad Zaeem]

Can somenone plss post the picture of M/J 2012 P5 drawing ...!!!!!!! ...

 

[Soldier313]

yeah thanks alot ..... i also did the same and the blue part ? how many s.f. should be there? am always confused ?

thanks again

You're welcome.
I guess it has to be the same no of sgf as the original error, hence 1 sgf, am not quite sure though

 

[minie23]

I seriously need help for no. 2
with diagrams too, please

http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s05_qp_5.pdf

 

[connor4666]

Hey guys,
Can anyone please help with the O/N07 Q.no2 part b. I don't get the part where we have to find the absolute uncertainties of the values of "lgV/v". I found the bormal values of lgV but can't find the uncertainties.
I'd be grateful if anyone helped me out!!
Thanks

 

[biba]

these are some random papers....

 

[biba]

and here

 

[biba]

its messy.. but i think it wil help

 

[minie23]

its messy.. but i think it wil help

Do you have for this one, with diagrams ?

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s05_qp_5.pdf

 

[biba]

Do you have for this one, with diagrams ?

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s05_qp_5.pdf

nope.. sorry

 

[Wanderer]

Hey for this diagram, does the hall probe have to be positioned differently from the way you've done it?
I think it has to be perpendicular to the magnetic field direction right? Or am i confusing something?

Oh and could you please explain, the points from the ms where it says "determine the axis of the coil" ( in the measurements to be taken section), and also, the parts where the ms states "keep the probe along the axis" (in the additional detail section) please?

Thank you

Yes the hall probe has to positioned this way so that it is perpendicular to the direction of the field.
P.s in method to determine axis of coil or to find x=0...it basically means that the hall probe should be positioned at the midpoint of the coil to find the reading at that point...I'm not really sure about this part though
In order to keep the probe along the axis..we have placed it on the top of a metre rule which, you can add, should be clamped horizontally to keep it in the same axis throughout the experiment.
I'm not sure if my explanation helped...

 

[Wanderer]

and here

These are really helpful

 

[Soldier313]

biba these are just amazing! JazakAllah khair!
May Allah bless you immensely!

 

[minie23]

Soldier313 : Why you no help me for the question I posted above ? :'(

 

[Soldier313]

Soldier313 : Why you no help me for the question I posted above ? :'(

Heyy i haven't yet solved that paper but i guess, i saw something similar to that in one of the diagrams biba posted
Sorry i'll try and explain if i manage to do it inshaAllah

Here, i guess this is quite similar

 

[geek101]

Soldier313 here ya go hope that helps, i drew the worst fit line in blue so it shows, and also ignore the little horizontal line on the first point!

 

[Soldier313]

Soldier313 here ya go hope that helps, i drew the worst fit line in blue so it shows, and also ignore the little horizontal line on the first point!

Thanx a ton for this!
May Allah bless you

 

[geek101]

Thanx a ton for this!
May Allah bless you

no problemo

 

[minie23]

Soldier313 here ya go hope that helps, i drew the worst fit line in blue so it shows, and also ignore the little horizontal line on the first point!

The worst line should pass through the first and last tip of the error bars ?
Is it compulsory ?
What about the best fit line ?