Qualification > Sciences
Physics AS practical 3rd Nov
raunaqbhatia:
:)
MaNi_DaDuDe:
--- Quote from: pravin_5 on November 01, 2009, 02:51:02 pm ---soooo sorry heemvi,,, bt all d students in my school are doing paper 33 for oct/nov 09...
sorry......bt knw what instead of looking for predictions...i strongly encourage you to revise ur past papers...learn hw to tabulate data accurately....well u mite know that raw data depends on dp of the measurement while processed data depends on sf of the raw data.....for clarification look at marking scheme...then uncertainty in measurements, hw to justify the given statement( explain whether x is proportional to y), drawing graph and ect....and and sources of error and method of improvement for both electrical or mechanical type of questions.....(1 popular answer is that two readings are not enough to draw a valid conclusion.....to improve....repeat the experiment several times to obtain 6 sets of reading and plot a graph)
all the best wishes from me
--- End quote ---
Thanks!
+rep'd :)
falafail:
--- Quote from: pravin_5 on November 01, 2009, 02:51:02 pm ---well u mite know that raw data depends on dp of the measurement while processed data depends on sf of the raw data.....
--- End quote ---
could someone explain this please? :/
lalib10:
Can sum1 plx explain me how to do the question of may/june 2007 P32
Question number 1d
Taking the values of
I=43.4x10^-3
R3=47
y-intercept as = 7
falafail:
--- Quote from: lalib10 on November 01, 2009, 08:19:09 pm ---Can sum1 plx explain me how to do the question of may/june 2007 P32
Question number 1d
Taking the values of
I=43.4x10^-3
R3=47
y-intercept as = 7
--- End quote ---
okay, you know that the equation of a straight line is y=mx+c right?
in this case, 1/I is y, R3 is x, (R1+R2/ER2) is m (the gradient) and R1/E is c (the y-intercept)
geddit?
just, next time you have a questino like this (which we will, almost definitely), write y=mx+c above the equation given and see which values match with which.
in this question, substitute the values you got for the gradient and the y-intercept to find R1 and R2.
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