A Level Physics Paper 5

[Nisha Kolhe]

Okay so in may/June 2010 for the second question you are required to find the value of T and T^2 and the ms only gives values of T^2. I have tried every possible way but don't get the markscheme values for T or T^2. The ms seems off but I know that is pretty unreasonable.

Please refer to the picture I attached of the question or look the paper up thanks

 

[demon29]

if you can see on page 5 it says "the time t for 10 oscillations" so all the "t" values should be divided by 10.
eg, 18.9/10= 1.89
and then for T^2= 1.89^2=3.572
the uncertainty is 0.01 because of "t" dividing by 10. when you divide "t" do divide the uncertainty of it like 0.1/10= 0.01

 

[Nisha Kolhe]

Thank

if you can see on page 5 it says "the time t for 10 oscillations" so all the "t" values should be divided by 10.
eg, 18.9/10= 1.89
and then for T^2= 1.89^2=3.572
the uncertainty is 0.01 because of "t" dividing by 10. when you divide "t" do divide the uncertainty of it like 0.1/10= 0.01

Thank you so much

 

[demon29]

no problem at all mate

 

[moinul]

can anyone plz help me telling how to draw error bar in p5? if possible plz post a snapshot with graph.plz.

 

[saad10khan]

how to find the gradient and y-intercept in P5 phy. for example t^2=kr^3. whats the y-intercept and gradient. help needed

 

[demon29]

can anyone plz help me telling how to draw error bar in p5? if possible plz post a snapshot with graph.plz.

I got it now.. its lik as in m/j 2008 the value is 580 +/- 20
so the upper value is 580+20= 600
lower value is 580-20= 560
so, log(600/560) = 0.03
the error value is 0.03

 

[mnotanerd]

how to find errorss in log??

 

[demon29]

how to find errorss in log??

I mentioned that up there.

 

[demon29]

how to find the gradient and y-intercept in P5 phy. for example t^2=kr^3. whats the y-intercept and gradient. help needed

log T^2= log(k x r^3)
2 log T= log k + log r^3
2 log T= log k + 3 log r

so gradient is 2
y intercept is log k

 

[saad10khan]

log T^2= log(k x r^3)
2 log T= log k + log r^3
2 log T= log k + 3 log r

so gradient is 2
y intercept is log k

i did the same but the answer is wrong.

 

[demon29]

i did the same but the answer is wrong.

which answer? (a) part?

 

[demon29]

i did the same but the answer is wrong.

idk man what it is my preparation is so messed up dunno what the Hell am I gonna do tomorrow

 

[mnotanerd]

can anyone tell me how to find uncertainities??

 

[mnotanerd]

need help with mau june 2011 varient 51...q2 part d and e

 

[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?