physics paper 33

[surajsingh143]

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

i cannot go inside that page :'(

 

[7devilsallaround]

when we find out Y-Intercept and the gradient .... do we have to mention its units too????

Yes, units are required.

 

[omair tahir]

Best of luck every1
Do tell me how to calculate uncertainity

 

[cHeStEr]

Yes, units are required.

If time/sec was on Y and x/m was on X axis ...
what'll be the units for Y - intercept and the gradient ?

Y-intercept i guess unit will be same as the Y axis .... but i have no idea about the gradient...

 

[7devilsallaround]

gradient= delta y / delta x
so units will be units of y / units of x = sec/metre = sm^-1

 

[cHeStEr]

gradient= delta y / delta x
so units will be units of y / units of x = sec/metre = sm^-1

ohhh thnxxxx!!!
2 more doubts plzzz!!!!
http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_w11_qp_35.pdf
help me with question 2aiii please....
and
help me understand the concept of error calculation...

 

[cHeStEr]

Best of luck every1
Do tell me how to calculate uncertainity

percentage uncertainty = ( uncertainty / average value ) x 100
that is all i knw abt uncertainty thing....
hope this helped a bit though...

best of luck

 

[7devilsallaround]

ohhh thnxxxx!!!
2 more doubts plzzz!!!!
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w11_qp_35.pdf
help me with question 2aiii please....
and
help me understand the concept of error calculation...

Uhh im not too good with those but here's a try:
You found m by 50-0 right?
Then % uncertainty of m = ((0.05 x 2) / m ) x 100
For repeated readings, as in taking average values, uncertainty is half the least uncertainty of the apparatus used.
When multiplying or dividing quantities, add their % uncertainties together.
When adding or subtracting quantities, add their absolute errors together, then divide by the result of the addition/subtraction of the measurement.
If a measurement is to be raised to a power, then multiply the % uncertainty in the measurement by the power to get the % uncertainty in the overall term.
Err thats it I think ;o

 

[cHeStEr]

Uhh im not too good with those but here's a try:
You found m by 50-0 right?
Then % uncertainty of m = ((0.05 x 2) / m ) x 100
For repeated readings, as in taking average values, uncertainty is half the least uncertainty of the apparatus used.
When multiplying or dividing quantities, add their % uncertainties together.
When adding or subtracting quantities, add their absolute errors together, then divide by the result of the addition/subtraction of the measurement.
If a measurement is to be raised to a power, then multiply the % uncertainty in the measurement by the power to get the % uncertainty in the overall term.
Err thats it I think ;o

ok so.......1st part i got it ........ and the second part i still didnt get it to be honest*
what do you mean by adding / subtracting / multiplying /dividng quantities ?
can you explain it to me with an example cz im still not sure whether i hv that thing correctly in my mind.

 

[7devilsallaround]

ok so.......1st part i got it ........ and the second part i still didnt get it to be honest*
what do you mean by adding / subtracting / multiplying /dividng quantities ?
can you explain it to me with an example cz im still not sure whether i hv that thing correctly in my mind.

Suppose you have 2 values a & b, we're taking about adding/subtracting/whatever those 2 values. Got it now?

 

[cHeStEr]

Suppose you have 2 values a & b, we're taking about adding/subtracting/whatever those 2 values. Got it now?

i think so ... actually i was taught a method now i dont remember it properly .... something delta x / x + delta y / y
i m confused.

 

[syairahhazira]

i cannot go inside that page :'(

me neither

 

[ABDSyed]

URGENT​

Do we have take readings in SI base unit ????​

 

[xxfarhaxx]

all da bst ppl!!
do da ppr with a sane mind!!!

 

[syairahhazira]

For angles the unit is degree right? But what if when it comes to sin theta or cos theta. will there still be any units?

 

[samwickz]

parallax error of thrmometer
fans n a.c intrpt result

go check 2011 oct/nov p 35 marking schm ans 4 d 2nd qz its abt temp crap

 

[omair tahir]

Quick question
Is there any unit for gradient we have to write????

 

[Firebender]

Quick question
Is there any unit for gradient we have to write????

Gradient is rate of change so no.

 

[toxicdevil]

What was the gradient? Mine was -ve 4.xx. From my group only my gradient was negative :/
Does it matter if we use cm or m and kg or g?

 

[toxicdevil]

33 iThink.