Physics Answers

[pinchies]

See mao's complete sol'ns
-->http://vcenotes.com/forum/index.php/topic,7570.0.html

I think it was a little harder than last year on a few q's, but mostly easier. Longer too?
Lets begin...  8-)

Magnets & Stuff
--------------------
1. Use rh grip rule, current flowing anti-clockwise

X. Coil leaving Field:
change in flux = final flux - initial flux = zero - into page = out of page. According to lenz law, this change is opposed, hence field set up into page. Via rh grip rule, current flows clockwise, from (p/q I cant remember) to (p/q). Q-P (Clockwise) (unsure-> need mao or someone to confirm. )

X.Vrms = Vp-p ÷ 2 ÷root(2) (I cant do latex :-( )
8÷2÷root(2) = 2.8V



X Power of spotlight over fountain = 48W
X. Voltage over globe 9v
X. Current in circuit = (0.5Ω*2 + 3Ω÷2 = 2.5Ω therefore 12/2.5 =) 4.8A
X. Power = v^2/R = 40W
X. *V
X. Current at primary = 0.167A
X. 400 turns



Light & Matter & Stuff
------------------------
X. 0.0364nm
X. 97nm
X. h = 5x10^-15 evs
X. 3.03
X. 2.4ev
X. Arrow from n=4 (12. to n=2 (10.6) with head at 2
X. Jump from 12.8 -> 0 = max energy = max freq = min wavelength

Photonics & Stuff (thanks Hamtarofreak)
--------------------
1.D
2.B
3.C
4.C
5.C
6.B
7.B
8.C
9.C
10.A
11.C
12.C
13.A

Syncrotron & Stuff
---------------------

Sound & Stuff
-----------------
1.B
2.B
3.B
4.C
5.B
6.B
7.C (B?)
8.C
9.C (B?)
10.C
11.A (D?)
12.B (C,A?)
13.C (B,D?)

:-) hope you physicists went well.

Edit: I'm going home to study chem. These are only the answers I remember, I'm sure Mao or someone will post a completed paper oneday.

Hope this helped!
~pinchies

(Thanks also to onlyfknhuman, BiGDaN, , , , for some I cant remember)

[champorado]

is that multi for sound? i got the same except for the last one which i wasn't really sure about. it seemed a bit fishy that there'd be so many b's and c's, so I kept going over those. wasted a lot of time on that, so i'm guessing i failed.

What did you get for that lenz's law q?

[thegubble]

*THESE ARE NOT THE ANSWERS, THIS IS WHAT I GOT*:
BBBCBBCCBCDBC

Anyone got the paper home yet?

[onlyfknhuman]

i got P TO Q WTF.


ITS P TO Q BECAUSE ITS LEAVING THE FIELD, HENCE IT WANTS MORE FLUX INSIDE THE FIELD HENCE THE FIELD MUST GO IN, USING RIGHT HAND GRIP RULE = P TO Q
i dont remember the questions but i remember the answers see if they click.

EP. 9v
p to q
.036nm i think
97 something
h = 5x10^-15 evs
err....

for that circuit shit p = v^2/R

lm

err... cant remmebe rshit LOl


For sound i got

BBBC
BBCC
CCAC
C


LOL FUCK CANT REMMBER SHIT

[cononthecob]

that was pretty damn easy. anyone else think physics was meant to be hard when they chose it in year 10/11?
Also, matt freeman = marvin

[champorado]

I got QP as well.

Year 11 seemed harder. Yr 12 physics is like the easiest maths subject in yr 12. Having said that, I still failed.

[cononthecob]

the Q and P thing was definitely clockwise, whichever way that was.

[onlyfknhuman]

WAT THE FUK ITS P TO Q 100 PERCENT >_< fck now i cant remmber wat i wrote down for it...someone post up the exam

[hamtarofreak]

I got DBCCCBBCCACCA for the Photonics questions

I'm pretty sure I got Q->P for the square coil thingo question too - definitely wrote clockwise, can't remember which way around that was though  :idiot2:

for the Vrms question

[matteh]

Q->P clockwise yo

[champorado]

Yes, I want to see the exam too. Someone post it, please! I want to see how many marks I lost. I totally fucked up that graph question. My mind just went blank.

note to self: coffee + night time = bad.

[Nelle91]

Was the P on the top or the bottom?

[onlyfknhuman]

i got clock wise too, but wasnt clock wise p to q?

[onlyfknhuman]

wasnt P on the top?>

[Robbo]

its p to q without a doubt and yeh i thought physics last yr was harder than this year. Weird