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Edexcel Physics Unit 6B (6PH08) Experiments!!

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Reply 60
Original post by kushil
i have otherss if u need just lemme know :smile:


Hey I am new here :smile: i need your help, i only have practicals 1-12 from the teacher's guide, can u post the rest? Thank you very much :biggrin:
Reply 61
Original post by kushil
i have otherss if u need just lemme know :smile:


Please upload all these as quick as possible,I need them urgently!!!:confused:

*Practical 12 The relationship between the pressure and temperature of a gas
*Practical 13 The relationship between the pressure and volume of a gas
*Practical 14 Measurement of the activity of a radioactive source
*Practical 15 Simulation of radioactive decay
*Practical 16 Graphical representation of simple harmonic motion
Reply 62
Original post by warkan
Oh thank god ! After looking at the handout got a mini heart attack :biggrin:
Well, I had the same doubt!! In one of the past papers there was a question on how to make sure the track is horizontal . In the teachers guide it says tilt the track to compensate for the friction :s.. Possible sources of error could be the air resistance but its not the best one :tongue:


yes ditto ... im not sure what to write now :s... i will ask my teacher about that today.... hmm...haha yes but its not really taken into account... well at least have something to depend on if they do ask :tongue:
Reply 63
Original post by aym3n
yes ditto ... im not sure what to write now :s... i will ask my teacher about that today.... hmm...haha yes but its not really taken into account... well at least have something to depend on if they do ask :tongue:


yo! ayymnnn! Uncertainity for stop Clock is apparently 0.5 o_O
It came in the Specimen ppr and the Mark scheme had 0.5 ..

So just go wd 0.5% Coz of the Reaction tym of one doing the Exp! :tongue:
If anyone is doing Chemistry Unit 6B. We are having the discussion. Join now if you want. :smile:
Reply 65
Original post by Samia99
yo! ayymnnn! Uncertainity for stop Clock is apparently 0.5 o_O
It came in the Specimen ppr and the Mark scheme had 0.5 ..

So just go wd 0.5% Coz of the Reaction tym of one doing the Exp! :tongue:


nai its .01 % s ...but we multiply the reaction time with the 1/no . of oscillations like if we have time for 10 oscillations then 1/10 x the reaction time ..... refer to the uncertainity notes u mailed me :tongue: and edexcel has diffrnt things in all papers :mad:

% diffrence :angry:
Guys, I need:

-Mark scheme 6PH08 Jan 2011
-The specimen paper

Could you help me?

Thanks in advance :biggrin:
Reply 68
Original post by Victor-PP
Guys, I need:

-Mark scheme 6PH08 Jan 2011
-The specimen paper

Could you help me?

Thanks in advance :biggrin:


I have attached them both ! :smile:
Reply 70


Hey dude ! could you help me with this please?

Note that, even if the initial results had be taken to the nearest 0.01 s, i.e. the
resolution of an electronic stopwatch, the final result would still be given to 0.1 s
because the first significant figure in the uncertainty is in the first place after the
decimal point.

Does that mean when you get the uncertainty to be 0.01 you round it of to 0.1s ? :s
Original post by warkan

Original post by warkan
Hey dude ! could you help me with this please?

Note that, even if the initial results had be taken to the nearest 0.01 s, i.e. the
resolution of an electronic stopwatch, the final result would still be given to 0.1 s
because the first significant figure in the uncertainty is in the first place after the
decimal point.

Does that mean when you get the uncertainty to be 0.01 you round it of to 0.1s ? :s


:s-smilie: Where is this mentioned?
You never round up 0.01 to 0.1.

=/
Reply 73
Original post by Vampire-Love4ever
You never round up 0.01 to 0.1.

=/


Hey if stopwatch comes .. what will yu take da uncertainity for it? :/
Reply 74
Original post by Vampire-Love4ever
:s-smilie: Where is this mentioned?


Yeah that's why i got confused. its mentioned in this booklet called 'definitions'. Probably downloaded form this or studentforumbiz. So what do we do about it ?

Also one more question !!

Metre Rule
Take the resolution as ±1 mm. This may be unduly pessimistic, especially if care is taken to avoid parallax errors. It should be remembered that all length measurements using rules actually involve two readings one at each end both of which are subject to uncertainty.

Does this mean then the uncertainty would be plus or minus 2mm if we a take a measurement using a ruler? But in may 2010 - 2bi) its given as just 1mm ?
Reply 75
Original post by Samia99
Hey if stopwatch comes .. what will yu take da uncertainity for it? :/


Use 0.1 sec. its usually 0.01s but due to reaction time it can be used as 0.1 s .
Original post by Samia99

Original post by Samia99
Hey if stopwatch comes .. what will yu take da uncertainity for it? :/


Hmmmm . . . in my notes, the uncertainty for stopwatch is 0.2s.


=.=
Original post by warkan

I think. . . I'll go with 0.1s.
Original post by warkan
I have attached them both ! :smile:


Thank you! :biggrin:
Reply 79
Okay then 0.1s it is!

Thanks guys! :wink:

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