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A2 Physics | Post your doubts here

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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 !
 
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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 :/
 
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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
 
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???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???
 

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