Physics Paper 52 - Discussion

[xyz!]

yeah.. 6.9*10^-34 i guess..!

 

[beamall]

my gradient was 1.37X10^-6..dn know where i messed up.my graph was pretty good..this value messed up my plank constant value ...it was 7.31x10^-34
what value of marks do u think i will loose???

 

[good man12]

my gradient was 1.37X10^-6..dn know where i messed up.my graph was pretty good..this value messed up my plank constant value ...it was 7.31x10^-6
what value of marks do u think i will loose???

may be the range will be wider!!!!! my friend got that value also, but to be honest, my worst acceptable line had that gradient

 

[adsffsdas]

cool stories guys. i see u all got a wide range of varying answers. lets hope they all lie within the range ascribed in the mark scheme ?
ya i got something ^-6 too but at the last minute when time was up i saw a huuuuuuge a$$ mistake where i didnt divide m and c by e, and so quickly wrote " /e " (without the "" lol) for part a, and only got time to calculate the value of -B/e .. and not the one before it. lost 2 pts. i was OHSOSAD :::::'(((((
but hey thats life and its pretty ironic the fact that i couldnt write more since my candidate number is reason i sit at the first desk, and hence when teacher says 'start', everyone begins writing and when teacher says 'stop' and yanks away my paper, everyone else is STILL writing.
pissed off? oh you bet i was. silly bs everywhere around me ffs.. but oh well.
regardless of that, it sure will make me feel better when i find out ive outperformed 3/4 of the school by several lengths ;-)

 

[Goku]

I used a ring coil and varied the height to vary the speed of dropping the magnet in question 1!

and I got confused in question 2,because values had to be given in 10^6 and they were originally in 10^9 So i did not know that
My gradient ws 1.38! But i forgot to write x10^6 D':
Left the last two parts because the time was over :'(
Think it went okay though!

 

[manu94]

My planck's constant was 6.9x10^-34 Js
What additional points did you all write for the first question?

 

[confused123]

I used a ring coil and varied the height to vary the speed of dropping the magnet in question 1!

and I got confused in question 2,because values had to be given in 10^6 and they were originally in 10^9 So i did not know that
My gradient ws 1.38! But i forgot to write x10^6 D':
Left the last two parts because the time was over :'(
Think it went okay though!

yeah i also forgot to write 10^6 , so this is encouraging. our answers are widespread and there is a lot of variation, i.e gt will be lower. keep it up people.

 

[alcoholic 111]

yeah i also forgot to write 10^6 , so this is encouraging. our answers are widespread and there is a lot of variation, i.e gt will be lower. keep it up people.

Same case with me
Atleast I am not Alone

 

[aditya avhad]

very easy.. still made some mistakes in the data calculation of the table.. Would I get Ecf for all the datas and the graphs according to the table?

Yup..you will. Good luck

 

[confused123]

Same case with me
Atleast I am not Alone

forget it move on, so how was bio p5? and what was ur degrees of freedom for dat t test question?

 

[good man12]

forget it move on, so how was bio p5? and what was ur degrees of freedom for dat t test question?

there were 38 degrees of freedom, so the difference was significant, and not due to chance

 

[babycry]

for how to vary velocity i think if u vary the height it would be wrong. i said u use a large height to ensure it reaches terminal velocity, and then glue masses to the magnet to increase the terminal velocity. if the height is not great enough, the magnet would be accelerating

 

[Pals_1010]

I dont think it matters much if it reaches terminal velocity or not since the question said the velocity when the magnet leaves the coil. U can drop it from rest from a height h above end of coil and time the motion. then find v = gt

 

[babycry]

the formula v=gt is for uniformly accelerated motion, with air resistance acceleration is not constant

 

[Pals_1010]

For a small height u can assume air resistance to be negligible,

I meant v = u + at but since u = 0 then v = at

 

[babycry]

ok but a magnet is not that heavy so it reaches terminal velocity very quickly.. and what if h was varied to such an extent that the ball reached terminal velocity? then h cannot be varied any higher or else the value of v will be the same and how would u calculate v when it reaches terminal velocity?

 

[Pals_1010]

I think the height for the magnet to reach terminal velocity is way too great for us to reach in a laboratory. Maybe we just have to vary the height so that it doesnt reach t.velocity (within a certain range). That could have been an additional detail. But again I might be totally wrong. How did you vary speed?

 

[babycry]

i said u glue masses to the magnet and use a flashing stroboscope to ensure it reaches terminal velocity, then use light gates to calculate v

 

[good man12]

well i think at least for first 5 seconds of motion of magnet its acceleration at most drops to 9.7m/s2 from 9.81, doesnt really matter

 

[Sandhya Mahat]

T

Yup..you will. Good luck

Thanks