physics p3 HELP!

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what should i write when we are asked "Explain whether your results support the suggested relationship"?..for example question 2e in this paper-http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s11_ms_33.pdf
 
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your results support the relationship when your k values are same or almost. i think "testing against a specified criterion" means we have to state that as d or l changes, k stays the same.
 

Moi

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The answer is Yes if K valurs are equal or close to each other but no more than 10% diff.
So...
If u got two different but close values of K
Then

(High Value K-Low value K / High Value K ) x100

U get the % difference between them.
If its less than 10 then Yes there is a relationship otherwise no.

Diff. Candidates will obtain diff. Answers... both Yes and No will be correct as answers providing that u have given a justification for that.

Ex. Yes k shows a relationship because both ks are of same value/ has less than 10% difference between.
Ex. No there is no relationship because I did not obtain the same value of K / huge difference between both values (over 10%)

I Hope that helped :)
 
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The answer is Yes if K valurs are equal or close to each other but no more than 10% diff.
So...
If u got two different but close values of K
Then

(High Value K-Low value K / High Value K ) x100

U get the % difference between them.
If its less than 10 then Yes there is a relationship otherwise no.

Diff. Candidates will obtain diff. Answers... both Yes and No will be correct as answers providing that u have given a justification for that.

Ex. Yes k shows a relationship because both ks are of same value/ has less than 10% difference between.
Ex. No there is no relationship because I did not obtain the same value of K / huge difference between both values (over 10%)

I Hope that helped :)
got it..Thanks!

WebRep

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I need help too!
1. how to find the percentage uncertainity of repeated reading?
2. what is the uncertainity of a protector?
 
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I need help too!
1. how to find the percentage uncertainity of repeated reading?
2. what is the uncertainity of a protector?

the actual/absolute uncertainty would be half the range of the readings. divide that by the average of the readings, then times 100
 
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I need help too!
1. how to find the percentage uncertainity of repeated reading?
2. what is the uncertainity of a protector?

So you have around six values from your repeated readings. Take the max. and minimum values and subtract them, then divide by 2. So it becomes (max. - min.)/2 So this would give us the Delta X (i.e, the absolute error). Divide it by the average reading, and multiply by 100.
 
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guys there was one paper where electricity was the second question and there was the limitations and improvement on that question.. anyone know which year that was? or could u pls tell me wat i could write on limitations and improvements on an electricity question..
thank u! :)
 
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guys there was one paper where electricity was the second question and there was the limitations and improvement on that question.. anyone know which year that was? or could u pls tell me wat i could write on limitations and improvements on an electricity question..
thank u! :)

I think you're talking about O/N 2011 35
 
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