Please upload all these as quick as possible,I need them urgently!!!
*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
Oh thank god ! After looking at the handout got a mini heart attack 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
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
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
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!
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!
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 and edexcel has diffrnt things in all papers
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
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
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 ?