was quanta stuffed or just me?? (1 Viewer)

[dnt stop runnin]

who picked number 3 and wat did they say about it??.......can we say it has a practical application in nuclear reactors??

 

[Fosweb]

Originally posted by Mathematician
I started using F(e) = kq(1).q(2)/d^2 but didnt know the ...
...
using F/l = kI(1).I(2)/d

and i think they REQUIRED u to talk about the Supercritical mass for the bomb for a bit..

I'm pretty sure it is on the data sheet (somewhere about half way down), but its 2x10^-7 anyway

And yeah - you did need to talk about critical mass of fissile material to set up nuclear bomb i think... and detonation/compacting it with force, that stuff... Then compare this to in a reactor how they are controlled by absorbing/stopping neutrons with however they do it...

Originally posted by dnt stop runnin
who picked number 3 and wat did they say about it??.......can we say it has a practical application in nuclear reactors??

And yeah - i reckon thats ok... Its a fission reaction that gives out energy... And neutrons... Like in a reactor...

 

[dnt stop runnin]

ok thanx......im hoping its right.....if it is,....then ill say the option was good....assuming ive got the other stuff right....i chose he right natural occuring reaction which was number 2..but i think i jusitfied it in a wrong way.....i said some rubbish that a neutrino is used to balance the laws therefore a neutrino is only emitted in a natural reaction.......is that a load of bullshit or wat?? (and yeh i thought there was a missing particle coz of that gap)

 

[dnt stop runnin]

how did Bohr refined rutherfords model?? plz tell me its about his postualates plz???

 

[MyLuv]

Originally posted by dnt stop runnin
wrote like 4-5 pages for that 8 mark question....

Omg, i wrote only 1.5 pages and it even include stuff from internet like physical shape,supercritical blahblabhblah..how can u get that much???

 

[Constip8edSkunk]

lol i overkilled that 8 marker as well - 7pages, but i had heaps big writing (4 or 5 words a line)and half page diagrams as well... funny though cuz i reckon i missed some tiny pt and will only get 6/8...

 

[ND]

Originally posted by Constip8edSkunk
lol i overkilled that 8 marker as well - 7pages, but i had heaps big writing (4 or 5 words a line)and half page diagrams as well... funny though cuz i reckon i missed some tiny pt and will only get 6/8...

Woah, i only wrote like 11 for my english essays.

I hope the other options get scaled if this section was as easy as everyone is making it out to be.

 

[Chand]

I have a question.

There was a question of proton- proton gravitational and electrostatic force. What did other people do? I just read off the graph, but that seemed pretty easy for two marks.

 

[dnt stop runnin]

i dnt think it was that easy.....but usually all option topics are of the same standard...so who knows...and yeh i wrote like 4-5 pages, but with small writing,...not too big........i just threw everything in there.even fermi's intial observation of nuclear fission so yeh

 

[dnt stop runnin]

.i chose he right natural occuring reaction which was number 2..but i think i jusitfied it in a wrong way.....i said some rubbish that a neutrino is used to balance the laws therefore a neutrino is only emitted in a natural reaction.......is that a load of bullshit or wat?? (and yeh i thought there was a missing particle coz of that gap)

who picked number 3 and wat did they say about it??.......can we say it has a practical application in nuclear reactors??

 

[allyteaded]

I was so pissed off at the fact that they chose like 1/16th of the whole entire quanta module and 1/8th of the whole syllabus in that exam. Damn it!

Did anyone else feel that way? In terms of the whole exam - did anyone feel the questions were very... general and you had to kinda... link to what's related? Like that Einstein's contribution - Like how many things did he do and how much space are we given??

And Quanta - what about de Broglie?? Pauli?? Wilson Cloud Chamber?? Accelerators?? Balmer's equation?

Seriously - considering they already cut so many things out - I'd hate to have done Physics last year!

Three hours... covering a picometer of the syllabus... grr...

oh yeah and Mathematician, k was in the data sheet. I asked my friend five minutes before the exam what the hell that constant was - lucky!! ^_^ lol...

 

[Affinity]

number 3:

fission reaction in nuclear reactors and atomic bombs such as the little boy, blah blah [insert synopsis of the 8 marker]

 

[LadyMoon]

Quanta was scary, the 8marker seemed too simple, i ended up writing everything i know about reactors!

 

[SmokedSalmon]

Quanta to Quarks was nicely structured. Everything they had asked I knew in depth. Thanks BOS!

 

[TheKey]

the only question here that gave me a mental block was the 2 properties of strong nuclear force.

i had no idea, said it was "strong" and also a repulsive force at close proximity.

anyway wat was the right answer?

 

[Fosweb]

Originally posted by Chand
I have a question.

There was a question of proton- proton gravitational and electrostatic force. What did other people do? I just read off the graph, but that seemed pretty easy for two marks.

Yeah - thats all I did. But you can compare forces:

F(G) = GM_1M_2/r^2
&
F(E) = KQ_1Q_2/r^2

But that K isnt on the data sheet, and i'm sure it would come out the same as on the graph anyway...

 

[walla]

Originally posted by TheKey
the only question here that gave me a mental block was the 2 properties of strong nuclear force.

i had no idea, said it was "strong" and also a repulsive force at close proximity.

anyway wat was the right answer?

yeah talked about strength at different distances (extremely close, neighbouring nucleons, any further than neighbouring nucleons)
and also that it was independent of charge

 

[Saul]

you could have also said that it worked equally on proton-proton, neutron-proton and neutron-neutron interactions

 

[dnt stop runnin]

all u had to say that it was a strong force needed to keep the protons together that are repelling......and that it is only a short range force

 

[Constip8edSkunk]

graphing it helps too in saving words and putting ur point across better