Physics Practical ( Paper 3 ) Tips :)

[dsiddiqi11]

wht the hell r u talking abt, there is no 1-d

sorry my bad, i thought u were talking abt igcse

[[Spy]]

m/j 09 .. ppr 31

1/I=R/P+Q/P

change it into a straight line equation form (y=mx+c) and then just put in the values you got for the gradient and y-intercept. try doing it that way yourself and then if you couldnt ill do it for you

[scorpion9500]

so wat is excpected to come for 33?

[[Spy]]

Here's another tip guys, generally for all practicals.


when your doing the first question, try finishing it 5-7 minutes earlier,so you can get to read the second question while the others are still doing the first. it helps ALOT! cause you'll go to the second question knowing directly exactly what to do unlike the others which will take some time to grasp the experiment first. just dont RUSH the first question,

i did it in biology practical and i was on of the few who found it very direct

[Asamy111]

1/I=R/P+Q/P
in y=mx + c ... so c = Q/p and mx = R/P ?? m i ryt or wt ?
thanks alot spy

[[Spy]]

yeah c=q/p

but, for mx, you can split R/P into, 1/P * R/P, so m=1/P (and x=R/P)

no problem

[Asamy111]

bt in this question .. x=R nt R/P

[[Spy]]

why?

[Asamy111]

cuz in the graph the x-axis is R

[[Spy]]

no leave the graph, just compare the equations.

[Asamy111]

hmm i ddnt gt it    then hw ill substitute ??

[Asamy111]

spy .. i think x=R cuz only in this way we can substitute the values to find P

[123ha456]

How about the last part of ques 2? The 8-point question about errors and how to fix. I always lose mark in that ques.

[zxcvbnm]

hey, can anyone please post the possible errors and improvements for tomorrow's phy 33? any ideas, spy?

[[Spy]]

It All Depends on the expirement, but here are some standard ones.

Repeat experiment several times and take average.

avoid paralex error by reading off a ruler in line with the value on the ruler.

use a set square for anytime you need to ensure right angles or measure something vertical.

if you tell me a specific experiment in a past paper or something i can tell you some which are more specific