Physics AS practical 3rd Nov

[MaNi_DaDuDe]

I think it was this one,

http://www.xtremepapers.net/CIE/index.php?dir=International%20A%20And%20AS%20Level/9702%20-%20Physics/&file=9702_s08_qp_31.pdf

[falafail]

I think it was this one,

http://www.xtremepapers.net/CIE/index.php?dir=International%20A%20And%20AS%20Level/9702%20-%20Physics/&file=9702_s08_qp_31.pdf

why would you do 180 minus the angle? just measure it.. 

[MaNi_DaDuDe]

why would you do 180 minus the angle? just measure it.. 

That's if you read it from the left, you do 180 - angle.. right?
Else just measure whole angle from right.

[falafail]

That's if you read it from the left, you do 180 - angle.. right?
Else just measure whole angle from right.

i have no idea what you're saying tbh.
your protractor measures both ways.. so.. just measure from the side you aligned the string with? 

[khi2ruh]

hey desperate help required!

usually for graphs i don't usually know how t set my scale up.

like this question on may/june 2008 31,my values for cos(Q/2) were from 0.79 to 0.87,six of them and they had to be plotted on the y axis.if i start from 0 and go on like 0.1,0.2,0.3... then its like i have wasted half my space and then my graph is right at the top,the examiners want us to use 3/4 of the spce available,so im not sure if im right or not.

[Sorceres]

hey desperate help required!

usually for graphs i don't usually know how t set my scale up.

like this question on may/june 2008 31,my values for cos(Q/2) were from 0.79 to 0.87,six of them and they had to be plotted on the y axis.if i start from 0 and go on like 0.1,0.2,0.3... then its like i have wasted half my space and then my graph is right at the top,the examiners want us to use 3/4 of the spce available,so im not sure if im right or not.

u don't have to start from zero.

[khi2ruh]

u don't have to start from zero.

oh i knew u could do that for x axis but can u do that for y-axis aswell?

and then if not zero then how do u do it i mean..leave the first block and then start with wateva value or just start from the value directly?

[falafail]

oh i knew u could do that for x axis but can u do that for y-axis aswell?

and then if not zero then how do u do it i mean..leave the first block and then start with wateva value or just start from the value directly?

"If either axis does not start from zero, this should be emphasised. A small zig-zag can be
inserted in the axis between the origin and the first scale point. Any other breaks in the axis
should be similarly marked."

[Sorceres]

oh i knew u could do that for x axis but can u do that for y-axis aswell?

and then if not zero then how do u do it i mean..leave the first block and then start with wateva value or just start from the value directly?

what i do is for the supposed "origin" horizontal line.. i write the value..

[khi2ruh]

thanks ppl, i was totally confused on that matter,now i get it.

for the percentage uncertainty in Q(angle) will it be like

0.5/value of Q *100?

[Sorceres]

thanks ppl, i was totally confused on that matter,now i get it.

for the percentage uncertainty in Q(angle) will it be like

0.5/value of Q *100?

uncertainty for angle is 1

[falafail]

thanks ppl, i was totally confused on that matter,now i get it.

for the percentage uncertainty in Q(angle) will it be like

0.5/value of Q *100?

i think it's 1/value of Q * 100.

[Asif iqbal]

Ummm can u ppl plz find  a list Of errors limitations and Dere solutions....

[Asif iqbal]

And 1 more then ne1 expecting wat will come in tomorrows practical plz predict..

[falafail]

right, quick question.
in one of the past papers, a ruler was suspended from strings, and one of the questions was to explain how you ensured that the ruler was horizontal.
i checked the examiner report, this is what it said:

"Most candidates stated that they would measure the distance of the rule from the bench top at
each end of the rule, and that the values would be the same if the rule was horizontal. This was
accepted for one mark. The more able candidates went on to give further detail, usually involving
the set square, to gain a second mark."

could someone explain what that last part means? the set square?