Physics paper 5 notes?

[Javior]

Error bars can even be horizontal right?

yep
can any one plz help on these 3 QS
1. SHOULD THE NO. OF SIGNIFICANT FIGURES BE THE SAME THROUGHOUT A COLUMN OR THE NO OF DECIMAL PLACES?
2 THE NO OF DECIMAL PLACES OF AN ERROR SHOULD ALWAYS BE EQUAL TO THE NO OF DECIMAL PLACES OF THE QUANTITY IN WHICH THE ERROR IS?
3. SHOULD GRADIENT AND FOLLOWING CALCULATIONS ALWAYS BE IN 3 SIGNIFICANT FIGURES OR DOES THAT DEPEND ON THE VALUES PLOTTED
Ill be very grateful ...

 

[chocolatelover]

yep
can any one plz help on these 3 QS
1. SHOULD THE NO. OF SIGNIFICANT FIGURES BE THE SAME THROUGHOUT A COLUMN OR THE NO OF DECIMAL PLACES?
2 THE NO OF DECIMAL PLACES OF AN ERROR SHOULD ALWAYS BE EQUAL TO THE NO OF DECIMAL PLACES OF THE QUANTITY IN WHICH THE ERROR IS?
3. SHOULD GRADIENT AND FOLLOWING CALCULATIONS ALWAYS BE IN 3 SIGNIFICANT FIGURES OR DOES THAT DEPEND ON THE VALUES PLOTTED
Ill be very grateful ...

The answer to your second question, Errors are always upto one to two sf. But keep it to 1sf. Best.

 

[no.mercy]

Any notes for the planning question?

 

[kiara15]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_51.pdf how to do quest 1 + diagram? anyone plzzzzzz

 

[kiara15]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w10_qp_53.pdf
quest 2 part e?how to form equation and furthur calculations? any1

 

[fb.junks]

ohh ok. we wil values of best fit and worst fit?
,

The gradient of best and worst acceptable line.

 

[fb.junks]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w10_qp_53.pdf
quest 2 part e?how to form equation and furthur calculations? any1

V=V0e^-t/CR
.10Vo=V0e^-t/CR(AS 10% of original potential difference)
ln(.10)=-15/CR (V0 eliminated on both sides)

Uncertainty of R=(Uncertainty of C/C )xR

 

[kiara15]

V=V0e^-t/CR
.10Vo=V0e^-t/CR(AS 10% of original potential difference)
ln(.10)=-15/CR (V0 eliminated on both sides)

Uncertainty of R=(Uncertainty of C/C )xR

• You are very generous.. thAAAANKU

 

[Javior]

The answer to your second question, Errors are always upto one to two sf. But keep it to 1sf. Best.

but wont it be wrong to write 2.34+_ 0.1
but to write 0.10
and thankyou

 

[fb.junks]

but wont it be wrong to write 2.34+_ 0.1
but to write 0.10
and thankyou

It would be wrong.U can only add a zero if u are sure your uncertainty is correct to 2 sig fig.
It is better to write it as 2.3+-.1
Experimental error are best given correct to 1 significant figure

 

[magnesium]

V=V0e^-t/CR
.10Vo=V0e^-t/CR(AS 10% of original potential difference)
ln(.10)=-15/CR (V0 eliminated on both sides)

Uncertainty of R=(Uncertainty of C/C )xR

y did u multiply by R?

 

[fb.junks]

y did u multiply by R?

That the way its done if u dont multiply by R u dont get the uncertainty instead u get the ratio of uncertainty of R/R.

 

[lionkill3r]

LYCEUM INTER NATIONAL SCHOOL NUGEGODA.
Which school is yours pal??

Replied by a pround lankan lion

royal institute nugegoda

 

[hellangel1]

http://olevel.sourceforge.net/papers/9702/9702_s13_qp_52.pdf
How to do question 1?
how are we supposed to change and measure the frequency of AC?

 

[Hula hoop]

How do u calculate absolute error when you're filling in a table? For eg in M/J 2007 P5 we are given values of length (of conducting putty) and the uncertainty is same for all values (+/- 0.4 cm). We're asked to calculate l squared and the absolute errors of l squared. I got all the absolute errors as +/- 0.8 which is wrong. I checked out the examiner report but it's not helpful . Could anybody help?

 

[XP member]

can anyone help me with the diagram of physics may/June 2013 paper51

 

[A*(a*)]

Only for karachi students
https://www.xtremepapers.com/commun...s-physics-chemistry-tuitions-available.36268/

 

[palwasa]

Log AUC= (Log of Maximum-Log on Minimum)/2
Eg: IF the say X=500+-5
then auc= ((log505)-(log495))/2

PS- I usually keep the value to the same number of sf as the raw data that i used to calculate it. And the error to 1 sf below the raw data. (be careful if you have 1 sf i raw data then keep both the calculated value and error to 1 sf) Usually the error is left to 1sf but the marking schemes allow more sf.

Hope this is helpful and sorry for the late reply guys.

Proudly to be Lankan lion

can u plz tell me how to find the error in question 2 b part of
http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s10_qp_52.pdf

 

[Ssniper]

Does anomaly count in error bars i mean the line should touch the anomaly or not