AS PHY PRACTICAL 33

[Machikne]

Yes, Everyone`s confirmed here that these are the same instruments. Experiments might be a little changed, But the instruments are confirmed. Do practice that paper..

BRO IS IT THE SAME EQUIPMENT FOR THE 32 VARIANT PAPER AS WELL??

 

[aniketjain]

They will. Many people have confirmed these instruments. And papers have been repeated almost the same in the past. By the night, you`ll be sure I am right
But one good thing. Now we know which paper to practice with for tomorrow . Oct/NOV 12 33. Blessing In disguise.

we dont have any electrcity part in this experiment

 

[h4rriet]

ANY ONE TO CLEAR MY DOUBTS ????
1-- FOR STATING A RELATIONSHIP WHEN FINDING K ???
2-- UNITS WE ARE SUPPORT TO USE WHEN NO UNITS ARE MENTIONED.. MY TEACHER TELLS ME WRITE ALWAYS IN STANDARD UNIT
IE)METRE , KG ,SECOND ETC.... BUT SOME MARKSCHEMES SAY LIKE "All values of l must be given to the nearest mm..."
3--- FOR GRAPH..IS IT A MUST TO START FROM ZERO? AS WE SOMETIMES BEGIN WITH LARGE VALUES

1. If the k values are close, the relationship is correct; if there's a very slight difference, for instance 25 and 21 or 0.00087 and 0.00076, then it is also correct, but you must say that there is a difference which can be attributed to random errors.
2. All measured values must be given to the precision of the instrument that you are using for the measurement. For instance, to measure the length, you use a rule. If you get, for instance, 56 cm, you must write 56.0 cm or 560 mm or 0.560 m. That's to the precision of the rule; the smallest calibrated distance on a rule is 1 mm, therefore all answers must be to the nearest mm (you can write 0.5 mm when the smallest distance you can measure is 1 mm). Writing to the nearest mm doesn't mean that the unit must be in mm. When you write 59 cm, you're writing to the nearest cm; when you write 0.59 cm, you're also writing to the nearest cm; 0.590 is to the nearest mm.
3. It is not essential to start at 0; you can use a false origin, and you mustn't forget to mark it on the graph. You also mustn't forget to make amends when finding the y-intercept; it'll be best to use y=mx+c to find c when you're using a false origin.

 

[Starkiller96]

yeh i think he's right
I heard it from one of my friends

 

[aniketjain]

Can you be a bit specific about the session and variant though.

do october november variant 33 and 35 (2010),http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w07_qp_31.pdf

 

[anmolareeba]

Hey plz upload marking of oct nov 2012 paper 34

 

[nafis shahRiyar]

can someone explain the second experiment that is coming tomorrow in 33? the one with the stand clamp,marble and stop watch..

 

[Machikne]

1. If the k values are close, the relationship is correct; if there's a very slight difference, for instance 25 and 21 or 0.00087 and 0.00076, then it is also correct, but you must say that there is a difference which can be attributed to random errors.
2. All measured values must be given to the precision of the instrument that you are using for the measurement. For instance, to measure the length, you use a rule. If you get, for instance, 56 cm, you must write 56.0 cm or 560 mm or 0.560 m. That's to the precision of the rule; the smallest calibrated distance on a rule is 1 mm, therefore all answers must be to the nearest mm (you can write 0.5 mm when the smallest distance you can measure is 1 mm). Writing to the nearest mm doesn't mean that the unit must be in mm. When you write 59 cm, you're writing to the nearest cm; when you write 0.59 cm, you're also writing to the nearest cm; 0.590 is to the nearest mm.
3. It is not essential to start at 0; you can use a false origin, and you mustn't forget to mark it on the graph. You also mustn't forget to make amends when finding the y-intercept; it'll be best to use y=mx+c to find c when you're using a false origin.

No... for the "k" question you actually find the percentage uncertainty for the two different values of "k" and compare it with the percentage uncertainty of the independent variable. if the values of "k" lie within these percentage uncertainties, then you can say "k" is constant and the results do support the relationship...you cant just compare the two values and come up with a conclusion like that lol

 

[aniketjain]

can someone explain the second experiment that is coming tomorrow in 33? the one with the stand clamp,marble and stop watch..

wht i know is tht we have some balls in the experiment and i think we have to roll it down the marble.

 

[Rahma Abdelrahman]

how was p31 chem

It was good.. how was urs?

 

[anmolareeba]

Plz upload the marking scheme for p34 oct 2012

 

[aniketjain]

"we have some balls in the experiment" lol nice one

hmm

 

[aniketjain]

Plz upload the marking scheme for p34 oct 2012

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_ms_34.pdf

 

[ahmed abdulla]

No... for the "k" question you actually find the percentage uncertainty for the two different values of "k" and compare it with the percentage uncertainty of the independent variable. if the values of "k" lie within these percentage uncertainties, then you can say "k" is constant and the results do support the relationship...you cant just compare the two values and come up with a conclusion like that lol

can u assume some examples plz... because i didnt get the % uncertainty

 

[ahmed abdulla]

1. If the k values are close, the relationship is correct; if there's a very slight difference, for instance 25 and 21 or 0.00087 and 0.00076, then it is also correct, but you must say that there is a difference which can be attributed to random errors.
2. All measured values must be given to the precision of the instrument that you are using for the measurement. For instance, to measure the length, you use a rule. If you get, for instance, 56 cm, you must write 56.0 cm or 560 mm or 0.560 m. That's to the precision of the rule; the smallest calibrated distance on a rule is 1 mm, therefore all answers must be to the nearest mm (you can write 0.5 mm when the smallest distance you can measure is 1 mm). Writing to the nearest mm doesn't mean that the unit must be in mm. When you write 59 cm, you're writing to the nearest cm; when you write 0.59 cm, you're also writing to the nearest cm; 0.590 is to the nearest mm.
3. It is not essential to start at 0; you can use a false origin, and you mustn't forget to mark it on the graph. You also mustn't forget to make amends when finding the y-intercept; it'll be best to use y=mx+c to find c when you're using a false origin.

thanks a loot bro...one last doubt .. what we write when they say justify the no. of sig. fig. ??

 

[nafis shahRiyar]

wht i know is tht we have some balls in the experiment and i think we have to roll it down the marble.

whaaaaa? did this experiment ever came in any of the past papers? if so,could you please tell me in which year it came?

 

[yousef]

who has idea of how to do o/n 2012 va. 34 ... the connection?

 

[falcon678]

guys m getting reports tht one question will be related to electricity....it will involve a rheostat n value for graph will be obtained by chnging its resistance..... n other for mechanic...it will involve an banta (marble) will require further time to knw wat exactly the question is.....

 

[Gimmick]

wht i know is tht we have some balls in the experiment and i think we have to roll it down the marble.

How do you roll a ball down a marble?

 

[Yousaf Jalal]

Banta means Marble