physics P5 some silly rather common doubts

[cutedevil]

plz help regarding some doubts in p5...
when we draw a graph will we take the SI Units on the axis. or just da same unit specified in ques or in the table. like table gives values in cm should we convert the values in Meter for plotting.?
and secondly when finding y-intercept or gradient, we should use SI units or ovr here also just da values given in table ?

 

[ALstudentd]

plz help regarding some doubts in p5...
when we draw a graph will we take the SI Units on the axis. or just da same unit specified in ques or in the table. like table gives values in cm should we convert the values in Meter for plotting.?
and secondly when finding y-intercept or gradient, we should use SI units or ovr here also just da values given in table ?

Usually, you should use the units given to you in the table.
When finding the y-intercept or gradients, check to see if you must use either of them in another calculation. If so, check the units asked for in the second calculation, if they are different from what you would get using your graph units, then convert the graph units before calculating y-intercept or gradient, it will make it easier for you.

 

[h.alia]

always use the units specified for u in the papaer unless the examiner asks u to give SI units !!

 

[cutedevil]

thanks guys
second doubt can u plzz tell how to find uncertinities cuz em sick n cnt undrstand a word 2 study help would be appreciated
and uncertinities in graph of log ?????

 

[BILALrox01]

When two quantities are just being added or subtracted the errors are simply added. When the quantities are being multiplied or divided their %age error is added and this new %age is the %age error of the calculated quantity. For Log Find log (value +error)-log(value)