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Edexcel A2 Physics Practical paper help needed

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MKh:
Assalaamo Alaikum,

I know everyone must be busy but please help me out here.

Doubt 1: How do u guyz tackle the planning questions? I am looking at past papers from the old Spec. to help me with the planning part but i really want help with it. Is there anyone here who has aced this paper? Please share your advices.

Doubt 2: There is always this question that goes along the lines: explain why a graph of ..... against ..... would be straight line. It involves using logs or natural logs (e). I know which one to use -- it will be stated in the question. I know we have to use little math here but is the method same for both logs and lns or is it any different?

Any other advice is always welcome.

Thanks.

Romeesa-Chan:
6B ?

Revised the practical investigation papers, did old papers and re-did the new papers.

Deadly_king:
I don't know if it's the same thing but in CIE we did these......

https://studentforums.biz/sciences-149/paper-5!!!!!!!!!!!!!!!!/

https://studentforums.biz/sciences-149/physics-paper-5-exam-11012/

Take a look, it might help :)

As for your doubts,

For you to be able to plan, you first really understand what's required of you and what the practical is all about.

Y = mx + C
log Y = mlog X + C
ln Y = mln X + C

If you don't understand, let me know and I'll try to be clearer ;)

MKh:
Much appreciated. The links r very helpful. Actually the planning questions in Edexcel Physics are quite similar to those at CIE.

So the method of using logs and ln is the same right?

And do we not have to add 'log' or 'ln' before the 'c' also in the equation y=mx+c?

Thanks once again. :)

Deadly_king:

--- Quote from: MKh on January 14, 2012, 06:00:03 pm ---Much appreciated. The links r very helpful. Actually the planning questions in Edexcel Physics are quite similar to those at CIE.

So the method of using logs and ln is the same right?

And do we not have to add 'log' or 'ln' before the 'c' also in the equation y=mx+c?

Thanks once again. :)

--- End quote ---

Yes, it's the same with log and ln ;)

Actually the log or ln of a constant is another constant ;) So if in the equation it's C, the log or ln of C will be another constant which you can name whatever you want like A....

You're most welcomed :)

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