A2 Physics | Post your doubts here

[mr_perfect]

plot the graph and draw best fit line... then draw worse fit line... take the difference between the best fit line's gradient and worse fit line's gradient... Is that What YOu were trying...??? so something different..???

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

 

[angelgirl:)]

ppl how to find absolute uncertainty for Q2?
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_51.pdf

 

[angelgirl:)]

ppl how to find absolute uncertainty for Q2?
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_51.pdf

oh Alhamdullilah i got it...

 

[angelgirl:)]

thimzii...i couldnt find how to find that uncertainty?

i found it....

 

[Abdullah syed]

since distance is constant we just have to find the uncertainty for time only ....
so for the first value...2/174 * 1.32 = 0.02....

Thanks a lot I tried But got confused with the [square] Thnx A lot

 

[angelgirl:)]

Thanks a lot I tried But got confused with the [square] Thnx A lot

but did u get it or not?

 

[Abdullah syed]

but did u get it or not?

Yea i got it
2/174 +2/174* 1.32
Actually i was trying this Because of the v²
Thank you for Clearing My doubt

 

[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

 

[hateexamz]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w10_qp_53.pdf
Q2 (b)how to gt ln(V/V)???

 

[vaibhavnatarajan]

Can someone please post notes on uncertainty ...

 

[Anneihtseme]

Hi guys, I self-study Physics mostly at home so I have some questions.

For the first question:
I wonder how many marks are awarded for the designed experiment diagram in the first question ?
and how we plot a graph if we don't have any data?

For the second question:

I sometimes got gradients that different from the mark scheme, not too much. For instance, the mark scheme says the y intercept range between 5.400-5.500 , but I got like 5.5334 or something like that. is my answer marked as a wrong one?
The same thing happened to my line of best fit, just some time it is out of the range for a very little.

Help

 

[SkyPilotage]

Hi guys, I self-study Physics mostly at home so I have some questions.

For the first question:
I wonder how many marks are awarded for the designed experiment diagram in the first question ?
and how we plot a graph if we don't have any data?

For the second question:

I sometimes got gradients that different from the mark scheme, not too much. For instance, the mark scheme says the y intercept range between 5.400-5.500 , but I got like 5.5334 or something like that. is my answer marked as a wrong one?
The same thing happened to my line of best fit, just some time it is out of the range for a very little.

Help

Hello, I study physics at home too!
Question one
Diagram holds marks depending on the question. Sometimes it ranges from 1-3 marks depending on how many details are required.
You dont plot a graph, you just say what to plot on the x- and y- axis and how the graph should look like.

Question 2:-
This is due to inaccuracies in your drawing. Maybe you need to practice on your line of best fit.
Maybe you are rounding the numbers and not taking accurate s.f.

 

[girlscampisra]

http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_51.pdf

q2 part d (i)
can anyone please tell me why have they multiplied intercept by 2??

 

[Aqsa Mohd]

is it necessary for question1 in p5 to draw a diagram everytime ? :S or we can give our best explanation either

 

[girlscampisra]

is it necessary for question1 in p5 to draw a diagram everytime ? :S or we can give our best explanation either

diagram is must!

 

[Aqsa Mohd]

diagram is must!

oohh ok .. thanks for telling . but how do v knw k which diagram to b made :S

 

[sararash]

can someone plz help wid da diagram.....summer 2010 p52....Q.1.....a picture plz...how do v draw it???

 

[mr_perfect]

can any1 gimme a website where there are demonstrations of several physix practicals plz ?? like that if i m lucky the same practical i know how to perform may come in the xam and i may score full marx in Q1 . that would be the most helpful thing for a physix paper 5 candidate who r givin the xam in 2 days time. tnx for the help. i appreciate it.

 

[mr_perfect]

can sum1 xplain to me what a light-gate is and how does it function ?

 

[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 !