physics paper 33

[mujtabashahnawaz]

to determine wether two quantities are directy proprtional we subtract smaller value of k from d bigger one den divide by bigger value..if the percentage is greater than 10 percent dn nt proportional otherwise proportional..is this method correct or not??

correct

 

[Dani boi]

to determine wether two quantities are directy proprtional we subtract smaller value of k from d bigger one den divide by bigger value..if the percentage is greater than 10 percent dn nt proportional otherwise proportional..is this method correct or not??

yes correct!!!!!

 

[mujtabashahnawaz]

Can u help me with my q posted above?

 

[thunderingthunder]

use the limitations and improvements of this practical only.............
in fact this paper can't come coz its the latest one ............
its limitations and improvements are helpful

Thanks for the help Dani boi

 

[oldfashionedgirl]

Limitations, errors and improvements for temp change plz

there will be heat losses to environment, or error in reading the thermometer but DONT write parallax error
for improvements u can write the use of data loggers, insulation such as matting, take more than 2 readings and plot graph, dont touch the bottom of the thermometer to the base of container,etc

 

[oldfashionedgirl]

Uncertainty= least count/2 ??? Is that right?
And what is least count? The lowest marking? Or the lowest marking/2 ???

fractional uncertainty= least count/reading
uncertainty= least count multiplied by 2 or 3

 

[Dani boi]

Thanks for the help Dani boi

Don't Mention it........
n ur r welcome

 

[oldfashionedgirl]

to determine wether two quantities are directy proprtional we subtract smaller value of k from d bigger one den divide by bigger value..if the percentage is greater than 10 percent dn nt proportional otherwise proportional..is this method correct or not??

actually thats incorrect, subtract the 2 k values but divide the answer with the SMALLER value so that ur error value can be maximum. the multiply with 100. Now if this answer is almost equal to or less than the uncertainty u calculated earlier, then the relation holds true. If its much greater, then its not true.

 

[floral123]

actually thats incorrect, subtract the 2 k values but divide the answer with the SMALLER value so that ur error value can be maximum. the multiply with 100. Now if this answer is almost equal to or less than the uncertainty u calculated earlier, then the relation holds true. If its much greater, then its not true.

plz ...be confirmed...what to divide,the smaller or bigger?

 

[Dani boi]

follow link for full leaked info...100% confirmed!!
http://www.xtremepapers.com/community/threads/physics-practical-33-revealed-but-locked.15151/#post-241894

 

[OssieBT]

And for the "spring" question the best paper I think would be Oct/Nov 2009 Variant 33 Question 1 !
If anybody has a better suggestion, please follow suit....

 

[broken angel]

u sure?

unfortunately no electricity question is expctd !!

 

[emeffy]

guys, in the markin scheme for w11 35 question 2 of the uncertainty part, it says :
Absolute uncertainty in
m in range 1–5 g with unit.
what does that mean?

 

[broken angel]

can anyone tell which type of spring constant Qs are included??

there will be :-
2stands
2 sprigs of length 2mm wd spring constant of 21
100 g mass sloted
50g sloted masses
protactor
set squares

 

[MalikAbdulMajeed]

Is the least count for a stop watch 0.01 or 0.1 and while calculating the uncertainity for a fast moving object do you take the least count as 0.05 or 0.5??

 

[broken angel]

Is the least count for a stop watch 0.01 or 0.1 and while calculating the uncertainity for a fast moving object do you take the least count as 0.05 or 0.5??

0.1
for fast moving 0.5

 

[7devilsallaround]

In Q1 sometimes they ask you to measure the length of something, and the answer space its like:" ___ cm" or " ___ mm". Unit is already given in cm or mm but those are not the standard unit, m is, so later on when they ask us to take readings, do we take them in cm, mm, or in m?

 

[broken angel]

In Q1 sometimes they ask you to measure the length of something, and the answer space its like:" ___ cm" or " ___ mm". Unit is already given in cm or mm but those are not the standard unit, m is, so later on when they ask us to take readings, do we take them in cm, mm, or in m?

on graph u can draw wd mm or cm bt whn u hv to dtrmine some value at th end u should chng it into stndrd units

 

[7devilsallaround]

on graph u can draw wd mm or cm bt whn u hv to dtrmine some value at th end u should chng it into stndrd units

Ohkayy...by "at the end" you mean when we write the answer in the ___ at the end of each part like ii) or iv) ? And what about in tables, use SI for those too?

 

[broken angel]

Ohkayy...by "at the end" you mean when we write the answer in the ___ at the end of each part like ii) or iv) ?

i mean js suppose thy hv said u to dtrmine spring constant wd th help of gradient thn u shuld hv to chng it..