• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

physics p3 HELP!

Messages
19
Reaction score
3
Points
13
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
 
Messages
34
Reaction score
4
Points
8
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

Messages
223
Reaction score
80
Points
38
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 :)
 
Messages
19
Reaction score
3
Points
13
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
line-dark-horizontal.png

Overall rating
line-dark-horizontal.png



line-dark-horizontal.png
 
Messages
16
Reaction score
1
Points
3
I need help too!
1. how to find the percentage uncertainity of repeated reading?
2. what is the uncertainity of a protector?
 
Messages
34
Reaction score
4
Points
8
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
 
Messages
49
Reaction score
35
Points
28
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.
 
Messages
31
Reaction score
3
Points
18
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! :)
 
Messages
10
Reaction score
2
Points
3
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
 
Top