Physics: Post your doubts here!

[Thought blocker]

please help in :
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w12_qp_12.pdf

Q27

Sorry for the delay.

 

[not.maria]

Sorry for the delay.
View attachment 44799

thanks a lot

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Al-Anoud]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s08_qp_1.pdf
Q14 please ._.
Answer: A

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Wolfgangs]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_11.pdf
Q20

 

[Jelleh Belleh]

I have a question regarding paper 3. When drawing a graph based on the readings on our table, if one of our points is far off from the others, after circling it, should we repeat for the reading by crossing out our previous results on the table and just write the new results above the previous one? Or add a new row? Or do we not repeat at all?

 

[Asad Moosvi]

I have a question regarding paper 3. When drawing a graph based on the readings on our table, if one of our points is far off from the others, after circling it, should we repeat for the reading by crossing out our previous results on the table and just write the new results above the previous one? Or add a new row? Or do we not repeat at all?

If there's only one point that is deviating from all the other points, you just have to circle this point and indicate that this is the anomalous point. You don't have to repeat it. However, you can't have two or more points that are way off.

Can you answer my question now? The one I posted above.

 

[Asad Moosvi]

For people who have paper 3 tomorrow, how are you all preparing for it?

 

[Asad Moosvi]

Come on...someone help me with the question I asked. Anyone.

 

[Wolfgangs]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_w12_qp_11.pdf
Q20

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[Asad Moosvi]

Got a quick question. How many significant figures should a percentage uncertainty have? (in paper 3, practical)

If I have an absolute uncertainty of 0.1 cm and the reading is 2.5 cm, how many significant figures should the percentage uncertainty have?

 

[26697luj]

as far as i know,you should keep all readings to the same significant figures..in this case to 0.1 dp.
any hints for last 8 marks in paper 3?

 

[Thought blocker]

Use the equation of motion s = ut + 0.5at^2
Now substitute the data into the equation
For XY
S= 40
t=12
u=??
a=??

equation 1 : 40 = 12u + 72a

For the X to Z
S= 80
t= 18
a=??
u=???
equation 2 : 80 = 18u + 162a
Why not I use the distance Y to Z is that it unitial velocity is different from that of X to Y
Now use simultaneus equation to get the answer..

Yeah, did it the same way..