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HAVE ANYONE DONE THE PHYSICS P.2 AS???
do u remember yhe answers plz tell me
do u remember yhe answers plz tell me
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hey i looked into itMind helping me with June 2002 for alternating current?
Yes you are right.. go for 3sf if thats the case. Since calculated values must have the same no./one more no. of sf as compare to that of raw data..I have my paper 3 practicals coming up and i am very confused about the significant numbers and decimal places to be used !! I've heard that for raw data we keep the decimal places same while for calculated data we keep the significant numbers same. Is it so? And also calculated data are same or one more sf than raw data.Then what if i have raw data readings in 2 sf and 3 sf both but both are in same dp...what sf will i choose for calculated data?!!
thanks!!Yes you are right.. go for 3sf if thats the case. Since calculated values must have the same no./one more no. of sf as compare to that of raw data..
if you calculate the average the absolute value would still stay .1cm also for diameter and radius it will be the same absolute error...this is because you are using the same instrument for measurig the values. i dont know about the angle though ..and they'll take the apparatus after an hour as far as i have heardFor P3, the part on percentage uncertainty troubles me alot.. If we measure two values, each with uncertainty .1cm, and calculate their average, would the absolute error in the calculated value be .2 or .1? Also, if the diameter of a tube has an uncertainty of .1cm, what would be the uncertainty in the radius? .1cm? Thirdly, how would we know if we are to give angles to the nearest degree or to half a degree? Is there some set rule? Please help me with this asap. Thanks in advance
One more thing: Would they take away the apparatus for q1 after an hour or would we have both sets of apparatus till the end? And any tips for the paper?
But ive come across several marking schemes in which they take the uncertainty of the averaged value as .2.. but at the same time there are many others in which they take it as .1.. pretty confused.. :/if you calculate the average the absolute value would still stay .1cm also for diameter and radius it will be the same absolute error...this is because you are using the same instrument for measurig the values. i dont know about the angle though ..and they'll take the apparatus after an hour as far as i have heard
why bother about it actually? if you have repeated readings then finding percentage uncertainity is (1/2 of highest reading - lowest readig)/avg reading x 100But ive come across several marking schemes in which they take the uncertainty of the averaged value as .2.. but at the same time there are many others in which they take it as .1.. pretty confused.. :/
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