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March 28, 2024, 09:46:20 pm

Author Topic: VCE Physics Question Thread!  (Read 603181 times)  Share 

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lolipopper

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Re: VCE Physics Question Thread!
« Reply #180 on: October 04, 2013, 02:50:57 pm »
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just read your signature lol, is that your final exam as well?
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lolipopper

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Re: VCE Physics Question Thread!
« Reply #181 on: October 04, 2013, 03:06:45 pm »
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Yep along with thousands of other physics students.
I've got a fair few friends who have physics as their last exam as well.
We're all planning on keeping our cool together after they say pens down in the physics exam (we don't want to be reported to VCAA or anything haha) then we're gonna go absolutely ballistic outside.

Planning on getting smashed on the footy oval, hopefully it's a nice day as well considering it'll be halfway through November!

for me its gonna be a full day of sleep and PS4 session.
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BasicAcid

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Re: VCE Physics Question Thread!
« Reply #182 on: October 04, 2013, 03:25:58 pm »
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for me its gonna be a full day of sleep and PS4 session.

Plenty of time for that after the day in my signature, I'm buying GtaV on the 14th lol

lzxnl

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Re: VCE Physics Question Thread!
« Reply #183 on: October 04, 2013, 06:56:28 pm »
+1
Lucky. For me, after the physics exam, all I can say is three down, three to go.
2012
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barydos

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Re: VCE Physics Question Thread!
« Reply #184 on: October 04, 2013, 07:12:23 pm »
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Just got some electricity questions from the VCAA 2007 exam
Questions: http://imgur.com/a/UhAma
Answers: http://imgur.com/wab3ASk

1) How come the graph needed to be inverted?
2) How come it clips at 3.0 V?

Thanks

Edit: Also, it's fine for explanation questions to be answered in dot points, right? Or are we required to write full sentences?
« Last Edit: October 04, 2013, 08:18:13 pm by Anonymiza »
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BasicAcid

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Re: VCE Physics Question Thread!
« Reply #185 on: October 04, 2013, 09:05:44 pm »
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Just got some electricity questions from the VCAA 2007 exam
Questions: http://imgur.com/a/UhAma
Answers: http://imgur.com/wab3ASk

1) How come the graph needed to be inverted?
2) How come it clips at 3.0 V?

Thanks

Edit: Also, it's fine for explanation questions to be answered in dot points, right? Or are we required to write full sentences?

Yeah dot points are fine and wtf, I haven't done any VCAA physics exams yet (except for the 2013 sample one... That seemed incredibly easy) but I actually have no idea why it's inverted o_o

Oh well, another thing to add to my cheat sheet when nliu answers haha





Lucky. For me, after the physics exam, all I can say is three down, three to go.

Aww English Language is the day after and you still have Uni exams?
But look at the bright side, you'll be able to say three 50s down (the way you demolish those spesh, chem and physics questions... far out lol), one 45+ to go and the uni stuff doesn't really even count haha.

Alwin

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Re: VCE Physics Question Thread!
« Reply #186 on: October 04, 2013, 10:37:09 pm »
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Oh well, another thing to add to my cheat sheet when nliu answers haha

Aww English Language is the day after and you still have Uni exams?
But look at the bright side, you'll be able to say three 50s down (the way you demolish those spesh, chem and physics questions... far out lol), one 45+ to go and the uni stuff doesn't really even count haha.

Im sorry to disappoint for I'm not nliu (@ nliu you have no idea what autocorrect on my iPod suggested for your nick LOL)

1) Anonymiza youre actually doing a paper from an older study design when students where actually required to know how things worked D; D; D; IKR THE SHOCK

2) Most simply put, what you have us a single transistor amplifier. Because you have an NPN transistor, when a large input signal comes in through the base, a "smaller" output voltage signal I recorded. Note if it was a double transistor amplifier then it would be non inverting

3) I really don't want to go into capacitors specifically, only because the textbook brushes on n-p and p-n junctions (not in stuy design) but no capacitors or the saturation point or cutoff point of transistors.

It's suffices to say you WON'T get a question like this. it's nice to know how an amplifiers work so you can answer questions like this, but 2013 VCE physics just doesnt require this standard.

EDIT: Sorry if I sound a bit too cynical of the physics subject. I put it down to my old age and that I did quite a few older exams (2009 was when they made the cuts/change ) just to spice up my revision last year :P
« Last Edit: October 04, 2013, 11:08:27 pm by Alwin »
2012:  Methods [48] Physics [49]
2013:  English [40] (oops) Chemistry [46] Spesh [42] Indo SL [34] Uni Maths: Melb UMEP [4.5] Monash MUEP [just for a bit of fun]
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barydos

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Re: VCE Physics Question Thread!
« Reply #187 on: October 04, 2013, 11:08:38 pm »
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In sorry to disappoint for I'm not nliu (@ nliu you have no idea what autocorrect on my iPod suggested for your nick LOL)

1) Anonymiza youre actually doing a paper from an older study design when students where actually required to know how things worked D; D; D; IKR THE SHOCK

2) Most simply put, what you have us a single transistor amplifier. Because you have an NPN transistor, when a large input signal comes in through the base, a "smaller" output voltage signal I recorded. Note if it was a double transistor amplifier then it would be non inverting

3) I really don't want to go into capacitors specifically, only because the textbook brushes on n-p and p-n junctions (not in stuy design) but no capacitors or the saturation point or cutoff point of transistors.

it's suffices to say you WON'T get a question like this. it's nice to know how an amplifiers work so you can answer questions like this, but VCE physics just doesnt require this standard.

1) LOL
2,3) I can see why you got 49 last year! Thanks a lot, much appreciated :)
2012: Methods [47] | Chinese SL [35]
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lzxnl

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Re: VCE Physics Question Thread!
« Reply #188 on: October 04, 2013, 11:28:23 pm »
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Aww English Language is the day after and you still have Uni exams?
But look at the bright side, you'll be able to say three 50s down (the way you demolish those spesh, chem and physics questions... far out lol), one 45+ to go and the uni stuff doesn't really even count haha.

Yep, English the day after. Which is going to be one hell of an exam.
And please don't give me that. At the rate I'm going at, I'll be surprised if I even get a 50 in anything.
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barydos

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Re: VCE Physics Question Thread!
« Reply #189 on: October 05, 2013, 11:59:49 am »
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When solving for the voltage gain of an amplifier, and it's an inverting one, are we allowed to write a negative answer? Or must it only be the magnitude of the gain? (are both acceptable?)
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~T

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Re: VCE Physics Question Thread!
« Reply #190 on: October 05, 2013, 12:05:42 pm »
+1
I believe both are acceptable, I usually just write or whatever the gain is if it is inverting, otherwise just the number.
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barydos

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Re: VCE Physics Question Thread!
« Reply #191 on: October 05, 2013, 12:15:23 pm »
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I believe both are acceptable, I usually just write or whatever the gain is if it is inverting, otherwise just the number.

Thanks :)

Another question: for the magnetic field graph, is it better to have the corresponding induced EMF graph to be joined (with vertical lines) or not?
(see this image: http://imgur.com/a/Gt5E2)
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~T

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Re: VCE Physics Question Thread!
« Reply #192 on: October 05, 2013, 12:17:43 pm »
+1
Again, I'm not strictly certain on this, but I usually do dotted vertical lines. I doubt they are pedantic enough to pick up on either of your two questions though :)
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barydos

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Re: VCE Physics Question Thread!
« Reply #193 on: October 05, 2013, 12:29:55 pm »
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Again, I'm not strictly certain on this, but I usually do dotted vertical lines. I doubt they are pedantic enough to pick up on either of your two questions though :)

That's good to hear haha thanks!
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lzxnl

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Re: VCE Physics Question Thread!
« Reply #194 on: October 05, 2013, 12:39:41 pm »
+1
I hear that we're meant to have vertical lines, but from a mathematical perspective and indeed a physical perspective, it's not possible to have a emf graph with vertical lines in it. The emf is single-valued; it cannot be multi-valued at any one time, so although I see vertical lines drawn in answers, I don't agree with them. It's like saying for one instant, the emf is both 1.1V, 1.2V, 1.3V and 1.4V.
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