A2 Physics | Post your doubts here

[hassam]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_52.pdf
q2 graph arent error bars tooo small??

 

[arlery]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_52.pdf
q2 graph arent error bars tooo small??

Find the percentage errors in this case and draw them.

 

[hassam]

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_52.pdf
q2 graph arent error bars tooo small??

i m getting a ridiculuos value for K......I hav chekd many times....this is wat i get 2.05*10^-16 and 4.79*10^-15......now the 2.05 one is using the correct best fit gradient.....bt error is too large.....i hv chekd multiple times bt still

 

[Abdullah syed]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s10_qp_52.pdf
Uncertainty PLZ

 

[Arshiful]

In october november 2010 paper 53 question 1. the markscheme says "Likely meter range of ammeter/voltmeter/ohmmeter" in the additional detail section. Can anyone please tell me the likely range of an ammeter /voltmeter !

 

[knight101]

t= 0.35 +/- 0.01

can anyone tell me how to calculate the uncertainty in t^2 ? last time I did this I was in AS so i forgot :/

 

[arlery]

t= 0.35 +/- 0.01

can anyone tell me how to calculate the uncertainty in t^2 ? last time I did this I was in AS so i forgot :/

2* 0.01 is the uncertainity for t^2

 

[Jonathan127]

Can someone please help!

I don't get how to calculate the errors when you log something. Like, take these values as an example:

I (current) = 2.6 +/- 0.1 . Calculate log(I) with the absolute errors.

How would you do it?? It came in this paper, Q2b)
http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s09_qp_5.pdf

 

[knight101]

2* 0.01 is the uncertainity for t^2

nah man that's wrong. it says 0.007 in the marking scheme. Oct/nov 09 qp52. Q2'

 

[arlery]

nah man that's wrong. it says 0.007 in the marking scheme. Oct/nov 09 qp52. Q2'

Is it? :S

 

[arlery]

Can someone please help!

I don't get how to calculate the errors when you log something. Like, take these values as an example:

I (current) = 2.6 +/- 0.1 . Calculate log(I) with the absolute errors.

How would you do it?? It came in this paper, Q2b)
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_qp_5.pdf

Refer to this:
http://www.xtremepapers.com/community/threads/physics-paper-5-tips.12941/#post-184062

 

[knight101]

Is it? :S

yeah it is. but someone told me how to calculate it properly in the other thread i posted . check it out.

 

[Jonathan127]

Refer to this:
http://www.xtremepapers.com/community/threads/physics-paper-5-tips.12941/#post-184062

Thanks for the quick reply, and help!

 

[arlery]

Thanks for the quick reply, and help!

np

 

[bestgirl]

t= 0.35 +/- 0.01

can anyone tell me how to calculate the uncertainty in t^2 ? last time I did this I was in AS so i forgot :/

2*0.01*0.35=0.007

 

[bestgirl]

How do you do part 2(e) of this paperttp://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_53.pdf

how to do this?

 

[Aqsa Mohd]

can someone plz upload their complete solved p5 so dat i can have a complete idea of it . plzzzz.. inculding the graph.

 

[Abdul H]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_53.pdf
Q2 (d) and (e)(ii).
I dont know which R value to use for 2(d)

 

[hassam]

???how to use light gates here exactly....i was thinking this...when Ma passes througgh 1st gate timer starts and when it reacjhes 2nd one it stops....am i correct???

 

[umarashraf]

but after finding the difference ain't we supposed to divide it by 2 to get the absolute uncertainty ??????????????

i think i have never divided the answer by 2...