Post by: vexx on March 13, 2011, 08:43:25 pm
In the study planner in the portal, when I try and add subjects in the right place (ie level 2-3 breadth searching 'music psychology' or level 1-3 breadth searching 'creative writing') the subjects I'm looking at don't come up, it's as if you can't add them anymore? I spoke to the music psychology coordinator and according to her it's not too late to do the subject, so why can't i add?
Vexx
(ps, physics is HELL) :p
Post by: Russ on March 13, 2011, 08:45:45 pm
You can get the EPSC to do it tomorrow though
Post by: vexx on March 13, 2011, 10:18:16 pm
When did the music psych lady say that, because afaik the cutoff to add subjects was the end of week 2.
You can get the EPSC to do it tomorrow though
oh ok well she emailed me tonight. i guess i'll go down tomorrow though, have to decide subject first!
Post by: Blakhitman on March 13, 2011, 10:24:23 pm
Post by: vexx on March 13, 2011, 10:33:18 pm
Physics is fun, don't change from it!
if only i found it fun:( i find it so horribly boring, i can't take it anymore haha
Post by: rustic_metal on March 13, 2011, 10:43:49 pm
Post by: simpak on March 13, 2011, 10:47:32 pm
BUT DON'T LEEEAAAVEEEE. The test is on next Friday, you gotta be there for that.
Post by: vexx on March 13, 2011, 10:51:30 pm
First year physics is a pain in the arse.
fundamentals? did it get better after the first 2 weeks?
the long problem-solving equations to me are so painful with all the equations, its not that hard - i just hate maths :\
Physics is killing me right now I don't even know what a vector is (nobody explain it k, that was a bit of an exaggeration).
BUT DON'T LEEEAAAVEEEE. The test is on next Friday, you gotta be there for that.
haha goodluck for that test, gladly i wont be there to do it. moving to music psych probs with its single essay and few questions per week assessment :D much better
Post by: simpak on March 13, 2011, 11:05:22 pm
The lecturer is awful. At least for me. I've compiled a mental selection of awesome quotes, beginning and not limited to "How many of you have done vectors before? A little under half of you? Well if you haven't done them before you can learn them in your own time, I'm not going to go through them now".
Do we need to know how to prove the ridiculous monkey/dart thing or is knowing that vertical and horizontal motion are independent for projectile motion enough? Because I remember veeerrryyy little from trigonometry.
Post by: vexx on March 13, 2011, 11:41:44 pm
): I'm so scared.
The lecturer is awful. At least for me. I've compiled a mental selection of awesome quotes, beginning and not limited to "How many of you have done vectors before? A little under half of you? Well if you haven't done them before you can learn them in your own time, I'm not going to go through them now".
Do we need to know how to prove the ridiculous monkey/dart thing or is knowing that vertical and horizontal motion are independent for projectile motion enough? Because I remember veeerrryyy little from trigonometry.
hahah
/agreed that monkey thing IS ridiculous, im sure you do need to know how to do that entire thing and i can imagine the exam having a question similar to it.. but i dont know cos im DROPPING IT
YAAAAAAY :3
Post by: simpak on March 14, 2011, 12:27:14 am
): I'm so scared.
The lecturer is awful. At least for me. I've compiled a mental selection of awesome quotes, beginning and not limited to "How many of you have done vectors before? A little under half of you? Well if you haven't done them before you can learn them in your own time, I'm not going to go through them now".
Do we need to know how to prove the ridiculous monkey/dart thing or is knowing that vertical and horizontal motion are independent for projectile motion enough? Because I remember veeerrryyy little from trigonometry.
hahah
/agreed that monkey thing IS ridiculous, im sure you do need to know how to do that entire thing and i can imagine the exam having a question similar to it.. but i dont know cos im DROPPING IT
YAAAAAAY :3
):
I thought Fundamentals was meant to be Simpak friendly.
Post by: Blakhitman on March 14, 2011, 12:27:45 am
But yea remember that horizontal velocity is constant throughout the motion since no force is acting on the projectile horizontally (ignoring air resistance) and the vertical is being acted on by gravity downwards (constant acceleration).
Physics is the best man, it's also beautiful.
Post by: vexx on March 14, 2011, 03:14:33 am
Physics is the best man, it's also beautiful.
beautiful? good sir, i beg to differ..
Post by: /0 on March 14, 2011, 04:17:34 am
Post by: Russ on March 14, 2011, 07:49:54 am
Post by: rustic_metal on March 14, 2011, 04:41:25 pm
First year physics is a pain in the arse.
fundamentals? did it get better after the first 2 weeks?
the long problem-solving equations to me are so painful with all the equations, its not that hard - i just hate maths :\
Nah, I did physics 1:advanced and physics 2: physical science and technology.
The maths in physics is pretty easy. You should probably get used to that if you want to do science (even if your course doesn't specifically require much maths).
Post by: simpak on March 15, 2011, 02:02:10 am
Otherwise, I know you are right! Which is why I have been studying it like 2 hours a night trying to revise Methods from 2009...
Post by: vexx on March 15, 2011, 05:38:42 pm
i picked up both music psych and creative writing haha they are both soooo much better. yay for overloading (i has less work/hours with these two combined than physics only sweet)
Post by: Russ on March 15, 2011, 06:24:14 pm
Post by: vexx on March 15, 2011, 07:12:13 pm
creative writing is a depressing amount of work at the due date though :'(
it doesnt seem tooooo bad. i have written heaps over the years, so i think i can finish all well on time :) can always recycle stuff i have!
not sure about the non-fiction/reflection piece though.. what'd you do?
Post by: rustic_metal on March 15, 2011, 07:35:32 pm
2. Ctrl+C
3. Ctrl+V
4. ?????
5. Fail. The likelihood of getting something decent in one random shot is extremely low.
Post by: Russ on March 15, 2011, 08:27:15 pm
Post by: vexx on March 15, 2011, 08:39:34 pm
Post by: rustic_metal on March 15, 2011, 08:41:22 pm
(Otherwise known are the rule of the internet :P)
Post by: dcc on March 16, 2011, 10:37:31 pm
Post by: simpak on March 17, 2011, 12:02:42 am
(http://l-userpic.livejournal.com/27558228/6516408)
Post by: happyhappyland on March 17, 2011, 06:02:27 pm
If the optics lecturer is just as shit I might get a tutor for 2-3weeks before the exam.
Post by: simpak on March 19, 2011, 01:16:48 am
Physics fundamental has the worse lecturer who puts up trick questions as examples. How im dealing with it is getting that sheet he gave us on the first lecture which outlines which chapters the book covers and learning purely from the book.
If the optics lecturer is just as shit I might get a tutor for 2-3weeks before the exam.
Yeah me also to everything above, just reading the textbook is much more valuable.
Post by: vexx on March 19, 2011, 02:04:03 am
Physics fundamental has the worse lecturer who puts up trick questions as examples. How im dealing with it is getting that sheet he gave us on the first lecture which outlines which chapters the book covers and learning purely from the book.
If the optics lecturer is just as shit I might get a tutor for 2-3weeks before the exam.
Yeah me also to everything above, just reading the textbook is much more valuable.
ahem to that.. the monkey example was one of the reasons i dropped it - thinking of doing questions like that would kill me, sooo boringggg. also since i didnt do yr12, i have to do quite a bit of self-learning for my bio subject, really didnt want another subject that was similar. but bio is interesting so i dont mind heh
goodluck guys ^_^
Post by: /0 on March 19, 2011, 06:29:58 am
Post by: vexx on March 19, 2011, 01:15:05 pm
lol what's the monkey example, I'm interested =p
umm basically a man from a distance is trying to shoot a monkey, but the monkey drops at the same time as the gun shot. since the bullet has a parabolic motion, what is the angle required to get the monkey. it was full of formulas to work it out, just so dry i couldnt take it.
Post by: Russ on March 19, 2011, 04:39:13 pm
Post by: simpak on March 19, 2011, 09:40:57 pm
Post by: happyhappyland on March 20, 2011, 03:59:01 pm
Post by: simpak on March 20, 2011, 11:23:01 pm
The test is only lectures 1-6 right? What a relief.
Post by: happyhappyland on March 21, 2011, 07:37:56 pm
from previous years i heard the test is really easy
Post by: simpak on March 23, 2011, 11:50:17 pm
'You all came to Melbourne Uni to prove how smart you are [so shut the fuck up and deal with my shitty lecturing skills]'.
What fun times that was to play back as I went through the recording.
Post by: rustic_metal on March 24, 2011, 09:36:42 pm
Post by: happyhappyland on March 24, 2011, 11:16:00 pm
Anybody in the physics lecture yesterday afternoon with the obnoxiously drunk people drinking goon and making out?
which row was this?
Post by: rustic_metal on March 24, 2011, 11:28:01 pm
Post by: schmalex on March 25, 2011, 06:11:39 pm
About 5th from the back in the Lyle.
It was you, wasn't it?
Post by: Gloamglozer on March 25, 2011, 07:11:01 pm
Post by: Russ on March 25, 2011, 07:25:20 pm
About 5th from the back in the Lyle.
It was you, wasn't it?
Before my girlfriend broke up with me, that was the only reason I took her to class.
Maybe that explains it...
Post by: happyhappyland on March 25, 2011, 09:24:28 pm
About 5th from the back in the Lyle.
It was you, wasn't it?
Before my girlfriend broke up with me, that was the only reason I took her to class.
Maybe that explains it...
i thought physics was always in rivett unless the noon one is in lyle
the test today was simple, but hated the fact it refered to some much stuff done during the lectures
Post by: simpak on March 25, 2011, 11:56:21 pm
Forgot to put units on practically everything.
Also like, spent ages trying to understand solving projectile motion equations.
Thanks so much for not putting that on Test C.
Post by: rustic_metal on March 26, 2011, 01:02:17 am
About 5th from the back in the Lyle.
It was you, wasn't it?
Quite possibly. A girl stood up and told us to leave.
And there was much lulzing.
Post by: QuantumJG on March 26, 2011, 09:54:50 am
Mind you, in second year you do get some crap lecturers.
By third year the lecturers are great, but electrodynamics is a bitch of a subject and I find myself dying inside everytime I attempt a question. :S
The Maths department on the other hand have always provided great lecturers (apart from Sanming Zhou in Linear Algebra) which is probably why I'm doing 5 Maths, 3 physics subjects this year and may do my masters in the Maths department.
Post by: Gloamglozer on March 26, 2011, 11:14:08 am
The Maths department on the other hand have always provided great lecturers (apart from Sanming Zhou in Linear Algebra) which is probably why I'm doing 5 Maths, 3 physics subjects this year and may do my masters in the Maths department.
Seconded. Definitely seconded. The Maths & Statstics ( :P ) department has been the most consistent in terms of lecturer quality.
You mentioned Sanming. I would probably include Omar Fodar for Vector Calculus as well...
Post by: QuantumJG on March 26, 2011, 11:48:50 am
Post by: rustic_metal on March 26, 2011, 12:35:17 pm
Post by: Elnino_Gerrard on March 26, 2011, 01:05:05 pm
Post by: rustic_metal on March 26, 2011, 01:56:13 pm
Also we found it hilarious that he spent the first few weeks going on and on about how he was going to study Galileo's original journals because he thought he could find something that would rock the world of physics. Then he left for a few weeks, came back, never mentioned it and deflected all questions about it. Obviously found nothing haha.
Post by: Elnino_Gerrard on March 26, 2011, 08:07:59 pm
Post by: simpak on March 27, 2011, 11:30:58 am
Lol! First year physics is really not a true representation of physics!
Mind you, in second year you do get some crap lecturers.
By third year the lecturers are great, but electrodynamics is a bitch of a subject and I find myself dying inside everytime I attempt a question. :S
YOU REALLY THINK ANYONE DOING FUNDAMENTALS IS GOING TO STICK AROUND PAST THIS SEMESTER? You've got to be kidding me, I'd rather throw myself off a bridge. I wish I liked it though.
Post by: Cuddlekins on March 27, 2011, 09:52:03 pm
I am doing physics fundamentals atm, and i hate it A LOT. I'm considering dropping it, but if i do it would be hard to pick up another subject since we are 5 weeks into the semester. Seriously i hate physics so much, i just can't bear it. Should i just continue and suffer, or just drop it but then that means im going to be one subject behind :/
i dont know what to do. *cries*
Post by: vexx on March 27, 2011, 09:54:46 pm
Hey guys, i need your advice.
I am doing physics fundamentals atm, and i hate it A LOT. I'm considering dropping it, but if i do it would be hard to pick up another subject since we are 5 weeks into the semester. Seriously i hate physics so much, i just can't bear it. Should i just continue and suffer, or just drop it but then that means im going to be one subject behind :/
i dont know what to do. *cries*
you probably wont be able to get approval this late into semester for a new subject, but you can always overload next semester on breadth subjects which are easy to do, and you'll be fine. drop physics if you hate it, that's what i did and im so happy about it..
Post by: Cuddlekins on March 27, 2011, 09:56:58 pm
thankd heaps
Post by: rustic_metal on March 27, 2011, 10:12:39 pm
Post by: vexx on March 27, 2011, 10:15:48 pm
Post by: Elnino_Gerrard on March 28, 2011, 07:28:07 pm
Post by: simpak on March 28, 2011, 10:51:35 pm
If it's a prereq you may as well stay, you're half way through almost it is week 5 so like, next week you are halfway through.
People who take this subject - did we ever actually do gravity? I kind of didn't keep up with the work while I was trying to understand the stuff we needed to know for the test and now I can't remember if we were going to 'talk about gravity later on' when we were doing orbits or if we actually did it but I can't remember Sevior making puns about apples and heads with his crazy grin and I'm almost SURE that would have happened.
Alternatively, I was asleep.
Anyway, have we gone through it in class yet? I just got up to it in the textbook and while I vaguely recall discussing orbits I do not remember the gravity stuff.
Post by: simpak on March 29, 2011, 12:47:20 am
Post by: schnappy on March 29, 2011, 04:49:00 pm
Other than that, engineering is where it's at. That's what I'm looking at doing :) Quantum mechanics and all that looks cool, but I don't really like obscure mathematics anyway.
Post by: John President on March 30, 2011, 08:33:43 pm
anyone doin physics advanced?..how do ull find that lecturer?david jamison is it?...IMO hes not at al good at explaining sme concepts..TB is way better ???David Jamieson is amusing at times and is clearly passionate about what he does but makes everything seem more complex, not simpler. It's frustrating when he goes off on some random tangent about advanced subatomic physics that goes way over everyone's heads.
Planning to "downgrade" next semester.
Post by: simpak on March 31, 2011, 10:37:07 am
Post by: happyhappyland on March 31, 2011, 10:00:06 pm
Post by: simpak on April 01, 2011, 12:32:55 am
16/18!
We are going to fucking own this subject.
Post by: schnappy on April 30, 2011, 02:45:03 am
Post by: Elnino_Gerrard on April 30, 2011, 03:36:33 am
Post by: schnappy on April 30, 2011, 05:07:26 pm
Work = F*x
Work = T*x
T=Mg*sin(angle of counter mass)
for me x is 400m...
Then make it negative for direction. And I'm getting the wrong answer apparently - used 2 of my goes! :(
Post by: Blakhitman on April 30, 2011, 08:56:46 pm
Then again I did the screwed up one before it was updated don't know if it was one of the errors or if it does make sense...
meh I got 96% and it's only worth 5% so I don't really care if it screwed me up.
Post by: schnappy on April 30, 2011, 09:29:39 pm
How did you work out the work done by the cable? If you don't want to tell me that's ok. [Got 98% for this question. Most errors were subbing in numbers wrong, using the wrong sign 'cos i worked things in my head differently... MasteringPhysics is a royal pain in the arse]
For question 5, i had huge problems getting the right numerical answers... turns out when i did ans/2pi on my calc, it divided by 2 then multiplied by pi. I just ended up using an online rpm -> rad/s and vice versa calculator to do it. Made it easy, but then i lost 0.14% because of sig figs. 0.14%. Really? 0.14%...
Q3 is odd. Part B... it says in terms of a b A etc. but then when i exclude a (i'm yet to see where a is relevant) it tells me that the equation shouldn't have b... hmmm I'm still stumped. Energy = mg(b+A) is wrong, probably mg(a+A) but I want to be convinced before i say it is.
Could someone doing Adv. Physics post up one of their questions? Just curious to see what it's like.
Post by: Elnino_Gerrard on April 30, 2011, 10:02:18 pm
Post by: Blakhitman on April 30, 2011, 10:07:24 pm
Yea part B the answer is: mga + mgA....which is stupid, because i think it should just be mgA. the ball is at height A from where GPE is 0 and it's the only mass there. the pan is massless so mga=0, and I don't know why there both m, they're different masses and there's only one ball, arrggggghhhh it pissed me off. but I guessed it when I got it wrong and got the rest right. You're right "a" has no relevance because only the pan is at "a" and it is massless!!!
/end rant
Post by: schnappy on April 30, 2011, 10:10:13 pm
Not as difficult as I thought advanced would be, considering comments I've seen in the past.
@Blakhitman
Yeah I figure it needs to be in brackets... fairly bad logic I think though. If i wanted to divide by 2 then multiply by pi, i'd have written ans*pi/2.
I don't follow. The question is badly written I'll give you that, first time I read it I had absolutely no idea what was going on. The clay ball is dropped from the ceiling, where grav pot = mgh. h is the distance from the maximum extension of the spring + a to the ceiling (as the question defines), since a is rest length of the spring. Makes sense to me now, I was thinking b because it'd be the equilibrium point for that... nvm.
Edit: Part C. energy at max extension should be the same as the initial energy (same as Part B). But now it involves variable b... WHAT!? - turns out it wanted it in strain energy form, so i could then equate the two.
Post by: Blakhitman on April 30, 2011, 10:37:53 pm
yea part c is 1/2kA^2 but you can't have k, so you need to substitute f/x which is (mg/(b-a))
Post by: schnappy on April 30, 2011, 10:54:10 pm
Post by: Elnino_Gerrard on April 30, 2011, 10:57:59 pm
Post by: schnappy on April 30, 2011, 11:21:04 pm
Microsoft math says its a quad equation, and using the quad. formula you apparently get:
A=(-sqrt(2a/(b-a)+1)+1)(b-a)
Well that's wrong, now I really don't know what they're looking for and I wasted my first go by writing the thing in the wrong box. :/
Post by: Blakhitman on April 30, 2011, 11:30:26 pm
but just use the positive.
I can scan the working for it if you want.
Post by: schnappy on April 30, 2011, 11:32:50 pm
is what the website will accept?
Post by: Blakhitman on April 30, 2011, 11:35:07 pm
Post by: schnappy on April 30, 2011, 11:40:34 pm
MasteringPhysics :thumbsdown:
:)
Post by: Blakhitman on April 30, 2011, 11:56:58 pm
yea masteringphysics is annoying, and I think we're the guinea pigs haha.
Post by: Elnino_Gerrard on May 01, 2011, 12:33:41 am
Post by: Elnino_Gerrard on May 01, 2011, 12:37:32 am
Post by: simpak on May 01, 2011, 01:36:55 am
Post by: Blakhitman on May 01, 2011, 02:02:01 am
Post by: schnappy on May 01, 2011, 04:33:50 pm
Post by: simpak on May 01, 2011, 10:04:06 pm
I'll upload the picture now...
http://i56.tinypic.com/2zyzy3o.jpg
Mmkay so, I am good with most of it but I'm just getting myself confused with the stuff specifically to do with circular motion, particularly b and f.
For b, I figured that because the tension force is the only thing pulling the hammer towards the centre of the circle that you would find it using centripetal acceleration. But then I was like 'wat about the gravities' so now I don't know how that comes into play - is the tension force just found using F = mac or does it involve the mg of the weight as well? Like, when I first looked at the question on an off day, I calculated the tension force using trig because you know the weight force and the angle at release. Would you sum the value I got there and the value I got for centripetal? Or ignore second guessing myself altogether?
And then for f, at first I thought the torque was 0 because the man is at the pivot point but NO then I realised this can't be the case and so I tried to find out what the torque was by finding the tangential acceleration and then finding the 'tangential force' and then solving for torque using the linear torque expression t = Frsinphi with F being the value I got as the tangential force and assuming that phi was 90 degrees but I don't know if that is right at all either...
The more I look at the question the more I confuse myself.
OH MAN I AM SO BAD AT PHYSICS. Really I just want to be able to understand this because circular motion is what I will 100% screw up in the exam. Thanks guys.
Ps. the reason I used linear expressions to solve for torque in f was because they don't give us the moment of inertia and Sevior was all 'oh yeah you don't need to know how to work that out lol' so I assumed they just didn't want us to use it but maybe I was meant to reference the textbook values? I had a look but I wasn't sure if the hammerthrow could be thought of as the same thing as 'cylinder with mass distributed around the rim' since the mass is kind of not distributed all over the rim it is centralised at one specific point. ...that is all.
Post by: schnappy on May 02, 2011, 12:19:22 am
A centripetal force is made up of other forces. It might be gravity, normal forces or how have you, in this case it is tension.
Centripetal force = Tension force
mvv/r = T
But I'm assuming the circular path is parallel to the Earth. The diagram suggests otherwise, but it doesn't give an angle specifying the angle of the circular path to the Earth, from which to find the component of gravity contributing to the centripetal force.
For f, you know that w_0 = 0, w_f = r/v
You found v in part a. Find alpha (angular accel) using a = (change in v) / t
Torque = I*alpha
It says all the mass of the system is in the 'hammer'. This means I = mrr.
That assignment is just as hard as the Physics 1 assignment, and it looks like you don't get 3 goes :S If this is sort of the equivalent to our angular kinematics question, I'd rank this higher actually.
Sorry my explanation is a bit hurried and I don't know latex :P
Post by: simpak on May 02, 2011, 01:23:04 am
Arrrrghhh, I know right and we got yelled at for saying they were going to fast. Three goes? We have this (there are only four questions, the others are fine I think this one is just the most difficult) and then two written response questions, one on ABS breaks and the other on earthquakes changing moment of inertia and therefore day length. But the questions are all on kinematics...we're not even doing kinematics anymore now, we're doing sound which I am better at! Wish the assignment was on that!
Post by: schnappy on May 02, 2011, 01:35:47 pm
If it's at ground level, doesn't mean it's in contact with the ground. Questions obviously aren't worded the best, but I'd go with it being just above the ground (so the tension is holding it up, not a normal force). Talking about a normal force holding it there would make it messy, and ruin everything.
If the hammer is released at ground level, wouldn't it just skid along the ground? (No vertical component of launch velocity) I thought it said the angle of launch was 45deg.
Are you meant to model the motion as a circle that's standing on top of the ground? Or as a circle that's bent over like in the picture? If you use the 45deg launch angle to find the weight component, but anything other than that and I'm confused.
Post by: simpak on May 02, 2011, 04:49:53 pm
I actually hate this question.
Post by: schnappy on May 02, 2011, 06:47:45 pm
From what I can tell the weight force 'pulls' the tension into the center of the circle, making a circular motion.
You might get a better response in the VCE Physics section.
Post by: simpak on May 02, 2011, 09:06:34 pm
Post by: schnappy on May 02, 2011, 09:57:58 pm
Basically the number (including the sign) with the i-hat (It's an 'i', but it's wearing a hat, like a ^) is a horizontal component, j is vertical. A vector has direction, at some angle theta. the i and j hat just breaks the angled vector into a horizontal and vertical parts, so you can add them together easily. If it's confusing just do vector addition however you know too, but it's probably worth learning.
Attached - There's probably some fancy definition for everything, but that'll show you what I mean. It's just a tool to add things together, though mathematicians think it's something to make difficult and silly.
Post by: simpak on May 03, 2011, 12:25:03 am
Ps I fucked that up at the top it should say T = Fc - x but I am lazy.
Post by: schnappy on May 03, 2011, 04:03:57 pm
EDIT: After subbing numbers in and looking at the result, I either still can't use a calculator OR this really doesn't seam right. What velocity did you work out in part a?
Decompose the centripetal force into its horizontal and vertical components:
Horizontal: (mvv/r)*sin(45)
Vertical: (mvv/r)*cos(45)
This is the resulting force, from the vector addition of the weight and tension.
Weight (only vertically - make it negative): -mg
For Tension,
Vertical: O
Horizontal: P
O-mg = (mvv/r)*cos(45)
O = ( (mvv/r)*cos(45) ) + mg
P = (mvv/r)*sin(45)
O is vertical, P is horizontal. The result is just a pythag problem:
O^2 + P^2 = T^2
Where T is the tension, which we're looking for.
The i-hat and j-hat notation is just doing the above, but having to write 'vertical' and 'horizontal' out goes away and you can just write a single line equation.
Please don't submit this as an aswer, I'm really not confident with it. Try plugging in numbers and see if you get a reasonable answer.
Post by: simpak on May 03, 2011, 11:00:26 pm
Thanks for that I'll give it a go!
Post by: happyhappyland on May 08, 2011, 11:51:39 am
Post by: simpak on May 13, 2011, 01:46:29 pm
And then I couldn't answer some other three mark question.
So there's 7 marks of blank.
It was too long for 20 minutes >:
Post by: Elnino_Gerrard on May 13, 2011, 09:21:26 pm
Post by: simpak on May 14, 2011, 12:13:51 am
Nobody I spoke to even finished.
Post by: Elnino_Gerrard on May 15, 2011, 03:38:41 am
For us the lecturer was like 'this won't take most of you 20 minutes'.JOke eh.Similiar story here.Except not only did we not finish ,most couldnt even do most of it xD
Nobody I spoke to even finished.
Post by: Elnino_Gerrard on May 15, 2011, 03:39:18 am
Post by: mikee65 on May 27, 2011, 04:46:29 pm
Post by: Elnino_Gerrard on June 06, 2011, 02:58:05 pm
The optics section was just fucked.25 makrs gone there.Lost about 50-70 overall,..with a few blank outs :\
Post by: Elnino_Gerrard on June 06, 2011, 03:19:01 pm
Post by: simpak on June 06, 2011, 03:43:16 pm
Post by: mikee65 on June 06, 2011, 04:45:51 pm
Post by: simpak on June 06, 2011, 06:21:36 pm
Post by: mikee65 on June 06, 2011, 07:42:56 pm
Post by: simpak on June 06, 2011, 07:50:29 pm
Post by: mikee65 on June 06, 2011, 07:56:01 pm
I didn't even go into that much detail, when it said 'what happens' I assumed it was just a response to like, the other guy being safe.just saying hes safe for 6 marks then 5 marks for not safe? mmm
Post by: simpak on June 06, 2011, 08:46:46 pm
Post by: mikee65 on June 06, 2011, 08:52:54 pm
Post by: simpak on June 06, 2011, 08:57:55 pm
Post by: happyhappyland on June 06, 2011, 08:59:40 pm
Im sure that ill get atleast a H2B, but probably not a H1.
Post by: simpak on June 06, 2011, 09:05:34 pm
My qualitative answers are so bad though. Like, good luck to whoever is marking that trying to decipher what I have even written towards the end.
Post by: happyhappyland on June 06, 2011, 10:06:49 pm
The projectile motion one stumped me for a while, I left it till last. I think it got confusing because they didn't explicitly state like, whether the person was taking off at an angle or what.
My qualitative answers are so bad though. Like, good luck to whoever is marking that trying to decipher what I have even written towards the end.
Do we get to know how exam mark? or just overall subject mark?
Post by: simpak on June 06, 2011, 10:15:16 pm
Post by: happyhappyland on June 07, 2011, 12:22:59 am
Post by: simpak on June 07, 2011, 09:00:46 am
I'm allowed to lose 44.5. Let's hope for the best? :D
Post by: Russ on June 07, 2011, 09:59:14 am
Post by: mikee65 on June 07, 2011, 10:11:21 am
Post by: Russ on June 07, 2011, 10:28:46 am
Post by: simpak on June 07, 2011, 10:39:55 am
I thought you said you were crap at physics mavis :P
I AM, everyone has a really high average for the other stuff because they make the pracs too easy to get 10/10 on and that's 25% of the mark. I did pretty well on the assignment but I screwed up the second test. Besides my definition of fail is a H2B.
Post by: happyhappyland on June 07, 2011, 06:28:03 pm
I thought you said you were crap at physics mavis :P
I AM, everyone has a really high average for the other stuff because they make the pracs too easy to get 10/10 on and that's 25% of the mark. I did pretty well on the assignment but I screwed up the second test. Besides my definition of fail is a H2B.
My demonstrator hated me because I always came late and she would dock one mark for everytime i was late ( I was 30min late a few times where she can actually make me not do the prac). Also wrote sloppy conclusions cos I wanted to leave early but I made up my prac mark with my good assignment and test marks :)
Good luck for bio if ur doing that tmr
Post by: Blakhitman on June 07, 2011, 08:04:39 pm
Post by: simpak on June 07, 2011, 08:32:03 pm
I thought you said you were crap at physics mavis :P
I AM, everyone has a really high average for the other stuff because they make the pracs too easy to get 10/10 on and that's 25% of the mark. I did pretty well on the assignment but I screwed up the second test. Besides my definition of fail is a H2B.
My demonstrator hated me because I always came late and she would dock one mark for everytime i was late ( I was 30min late a few times where she can actually make me not do the prac). Also wrote sloppy conclusions cos I wanted to leave early but I made up my prac mark with my good assignment and test marks :)
Good luck for bio if ur doing that tmr
Haha we had the opposite problem, our demonstrator was always late. One time I thought he would dock a mark because he overheard me commenting on how he was too stoned to turn up to class on time.
He didn't.
Thanks! Good luck to you too :)
Post by: happyhappyland on June 07, 2011, 10:45:31 pm
I'm on 39/40 for everything else (physics 1). so all I need to pass the subject is 11/60 for exam which is equivalent to 27.5/150 right?
Yep, well atleast thats how it worked for Accounting last year for me. I dont think science has any weird scaling or anything
Post by: Blakhitman on June 07, 2011, 11:51:29 pm
Post by: simpak on June 08, 2011, 02:57:38 pm
Edit: Who else had biol today? Pretty sure I'm actually considering wearing a snuggie to chem tomorrow.
Post by: mikee65 on June 08, 2011, 03:50:28 pm
Post by: simpak on June 08, 2011, 04:25:25 pm
PRESUMING YOU'LL BE AT CHEM TOMORROW: is the oxidation number of Si in the silicate anions/network solids etc always +4 or did I just make that up?
Post by: Russ on June 08, 2011, 05:44:42 pm
Post by: mikee65 on June 08, 2011, 05:45:30 pm
I think its usually +4,
Im fundamentals btw.
Post by: mikee65 on June 08, 2011, 05:48:06 pm
Post by: mankay on June 08, 2011, 05:49:33 pm
I've done this question (Q 24) about 5 times now and keep on getting (C), however, the answers says i'm wrong...
Can anybody help/tell me what they get?
Post by: Whatlol on June 08, 2011, 06:35:01 pm
so x =9x10^-6
[H+] = 10^14/9x10^-6
.: ph =-log(1.11x0^-9) =8.95
Post by: happyhappyland on June 08, 2011, 07:11:38 pm
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Post by: mankay on June 08, 2011, 07:40:05 pm
isnt it just Kb = x[0.1x0.1]/[0.1x0.05] (dilution cancels out)
so x =9x10^-6
[H+] = 10^14/9x10^-6
.: ph =-log(1.11x0^-9) =8.95
That makes sense accept for the start. Wouldnt what you're doing, implys that at the instant the two solutions are mixed, there are already OH- ions and there is no change from this?
---
Actually ignore the above. in the Kb expression, you're giving moles of the ions instead of the *concentrations*. That being said, your working leads to the correct answer... Anyone?
Post by: happyhappyland on June 08, 2011, 08:01:39 pm
isnt it just Kb = x[0.1x0.1]/[0.1x0.05] (dilution cancels out)
so x =9x10^-6
[H+] = 10^14/9x10^-6
.: ph =-log(1.11x0^-9) =8.95
That makes sense accept for the start. Wouldnt what you're doing, implys that at the instant the two solutions are mixed, there are already OH- ions and there is no change from this?
---
Actually ignore the above. in the Kb expression, you're giving moles of the ions instead of the *concentrations*. That being said, your working leads to the correct answer... Anyone?
I got the answer...convert to everythign to the new concentration since theres a new volumne.
WRite down Kb equation which is [OH][NH4]/ [NH3]. Put in the new concentrations of nh4 and nh3 to work out OH using KB. -log it and 14- that is the ph.
Post by: Whatlol on June 08, 2011, 08:10:56 pm
Post by: happyhappyland on June 08, 2011, 08:17:56 pm
yea the volumes cancel out. You can write (0.001/0.15)/(0.005/0.15) if you want.. but it doesn't change anythingThey dont
[ NH4+ ] is 0.06666667
[ NH3 ] is 0.03333333
Post by: mikee65 on June 08, 2011, 08:19:38 pm
Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Post by: Whatlol on June 08, 2011, 08:20:08 pm
yea the volumes cancel out. You can write (0.001/0.15)/(0.005/0.15) if you want.. but it doesn't change anythingThey dont
[ NH4+ ] is 0.06666667
[ NH3 ] is 0.03333333
... 0.0667/0.033 = (0.1x0.1)/(0.05x0.1)
Post by: mankay on June 08, 2011, 08:28:35 pm
I got the answer...convert to everythign to the new concentration since theres a new volumne.
Ohhhhhh, right. I forgot to take into account the volume change. Thanks!
Post by: happyhappyland on June 08, 2011, 09:32:09 pm
Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Hair lice was hard... cellular respiration i got confused in a few of the blanks. I forgot what myosin was. Tbh i prepared alot more on development, plants and anatomy of reproduction. none of which really came up.
Post by: simpak on June 08, 2011, 10:06:16 pm
Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Hair lice was hard... cellular respiration i got confused in a few of the blanks. I forgot what myosin was. Tbh i prepared alot more on development, plants and anatomy of reproduction. none of which really came up.
Freaking plant anatomy, I did so much of it last night, waste of my life could have been studying for chem. I thought the hormone thing with Rhodnius was a little shit, I mean, he didn't even tell us that juvenile hormone supresses and ecdysone causes molting (or at least that is what I have gathered from the textbook). Or like, maybe he did and the drone of his voice had sent me to sleep by that point.
I thought that some of the 2 mark multiple choice was a bit hard just because I hadn't really studied it, lel. Like, the mychorrhazial fungi, I was meant to put that on my train to do list with all my books and then I left summary book 2/5 at home and so couldn't do so. I thought the last question of Elgar's was really ambiguous - what did you guys write about? I couldn't recall ever learning about lipid soluble/water soluble hormones in his class, but it referred to the actions of hormones within cells. I was going to write a nasty note over the page about it and explain those terms as well but I ended up writing about autocrine/endocrine/parocrine stuff because that's what I recalled learning in class, even though that doesn't describe the action of hormones IN the cells but rather the site of action related to the site of production. Could have been wrong though! Oh well.
Also, re: chem, I'm scared for Willa, she scares meeee.
And also thanks for going through that question guys! About to go through it after getting it wrong myself.
And @Mike, thanks haha! I didn't know you were Fundamentals. But you probably do oxidation numbers at the moment and so know them better than me anyway, we haven't gone over them in Chem1 and I have forgotten 99% of year 12 if it isn't reinforced in this course.
Post by: simpak on June 08, 2011, 10:32:04 pm
Post by: lexitu on June 08, 2011, 10:57:13 pm
Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Hair lice was hard... cellular respiration i got confused in a few of the blanks. I forgot what myosin was. Tbh i prepared alot more on development, plants and anatomy of reproduction. none of which really came up.
Ouch, sounds tricky, you gotta know what myosin is though :P Only joking, that's PE stuff. Anyway, I'll be doing this next semester. Anyone care to send me any of the resources that you've used so far including past exams? Wouldn't mind getting a massive head start :D If so, my email is [email protected]. It would be greatly appreciated.
Post by: simpak on June 08, 2011, 11:00:29 pm
Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Hair lice was hard... cellular respiration i got confused in a few of the blanks. I forgot what myosin was. Tbh i prepared alot more on development, plants and anatomy of reproduction. none of which really came up.
Ouch, sounds tricky, you gotta know what myosin is though :P Only joking, that's PE stuff. Anyway, I'll be doing this next semester. Anyone care to send me any of the resources that you've used so far including past exams? Wouldn't mind getting a massive head start :D If so, my email is [email protected]. It would be greatly appreciated.
WE ONLY GET ONE EXAM D: tuff lyf.
But Edmund sent me another.
I can send you both! ...Tomorrow, after the chem exam and I am freeeee! :D
Post by: Blakhitman on June 08, 2011, 11:01:20 pm
AS LONG AS passing the exam isn't a hurdle!
Edit: Who else had biol today? Pretty sure I'm actually considering wearing a snuggie to chem tomorrow.
Passing the exam isn't a hurdle.
Post by: lexitu on June 08, 2011, 11:03:35 pm
Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Hair lice was hard... cellular respiration i got confused in a few of the blanks. I forgot what myosin was. Tbh i prepared alot more on development, plants and anatomy of reproduction. none of which really came up.
Ouch, sounds tricky, you gotta know what myosin is though :P Only joking, that's PE stuff. Anyway, I'll be doing this next semester. Anyone care to send me any of the resources that you've used so far including past exams? Wouldn't mind getting a massive head start :D If so, my email is [email protected]. It would be greatly appreciated.
WE ONLY GET ONE EXAM D: tuff lyf.
But Edmund sent me another.
I can send you both! ...Tomorrow, after the chem exam and I am freeeee! :D
Oh, awesome, thanks for that! And by next semester, I meant next year, whoops. You are so lucky to be finishing while the majority of people are just getting started. Stuff you.
Post by: simpak on June 08, 2011, 11:15:47 pm
Post by: lexitu on June 08, 2011, 11:32:44 pm
Post by: simpak on June 08, 2011, 11:56:01 pm
Why am I so silly? :D Nah in all seriousness six hours sleep should be enough.
Post by: mikee65 on June 09, 2011, 03:56:00 pm
I also prepared heaps for plant anatomy, virtually no questions asked, maybe 40% of everything I learned was assessed, I also had ecdysone, then altered it at the last moment..,Calculated I can lose 40marks on bio, and I reckon I did. Drew two diagrams for the mentrual cycle one and hoping for like 3 marks or so out of 10. I felt the exam did not really cover the scope of the whole course as I studied a lot of other topics in depth.Which specific qs do you think you messed up (if you can remember)
Chem is easy, the questions are often in the same style and espically the organic and inorganic chem because rizza and abraham have been teaching those for yearsss
Hair lice was hard... cellular respiration i got confused in a few of the blanks. I forgot what myosin was. Tbh i prepared alot more on development, plants and anatomy of reproduction. none of which really came up.
Freaking plant anatomy, I did so much of it last night, waste of my life could have been studying for chem. I thought the hormone thing with Rhodnius was a little shit, I mean, he didn't even tell us that juvenile hormone supresses and ecdysone causes molting (or at least that is what I have gathered from the textbook). Or like, maybe he did and the drone of his voice had sent me to sleep by that point.
I thought that some of the 2 mark multiple choice was a bit hard just because I hadn't really studied it, lel. Like, the mychorrhazial fungi, I was meant to put that on my train to do list with all my books and then I left summary book 2/5 at home and so couldn't do so. I thought the last question of Elgar's was really ambiguous - what did you guys write about? I couldn't recall ever learning about lipid soluble/water soluble hormones in his class, but it referred to the actions of hormones within cells. I was going to write a nasty note over the page about it and explain those terms as well but I ended up writing about autocrine/endocrine/parocrine stuff because that's what I recalled learning in class, even though that doesn't describe the action of hormones IN the cells but rather the site of action related to the site of production. Could have been wrong though! Oh well.
Also, re: chem, I'm scared for Willa, she scares meeee.
And also thanks for going through that question guys! About to go through it after getting it wrong myself.
And @Mike, thanks haha! I didn't know you were Fundamentals. But you probably do oxidation numbers at the moment and so know them better than me anyway, we haven't gone over them in Chem1 and I have forgotten 99% of year 12 if it isn't reinforced in this course.
mavis, or anyone else if you have an electronic copy of chem 1 tute book pleassee send.
Post by: simpak on June 09, 2011, 04:12:44 pm
Oh god Chem today, did not enjoy >:
Post by: mikee65 on June 09, 2011, 04:22:44 pm
Post by: happyhappyland on June 09, 2011, 07:43:45 pm
Post by: Whatlol on June 09, 2011, 08:33:38 pm
Chem was so hard today......................zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz. I could lose 47 marks out of 180 to get H1 though. I counted all the marks I MIGHT lose and got 52 so Im a bit worried
really?? it wasnt too hard i thought.
Post by: mikee65 on June 09, 2011, 08:40:28 pm
Post by: happyhappyland on June 09, 2011, 09:11:17 pm
I love how you always work out what mark you need to get a H1 happy
It helps decide if I can leave the exam early or not LOL so I dont have to line up at those big crates to get my bag :)
I need 26/40 for business law to get a H2B :) not aiming for H1 cos its impossible
Post by: simpak on June 10, 2011, 01:13:35 am
I did all the practice papers and studied forever, yet I think I just screw up under exam conditions. For me, it was reminiscent of 2009 midyear Chem, which none of you probably did. It was an extremely scarring experience, which causes me to mental blank in any exam which has any sense of time pressure. IT TOOK ME LIKE 20 MINUTES TO FIGURE OUT THAT STUPID Q4 MOLECULE. LIKE, IT SHOULDN'T BE THAT HARD.
Post by: mikee65 on June 10, 2011, 09:50:09 am
Oh I hate those crates, people are like vultures trying to get into those thingsI love how you always work out what mark you need to get a H1 happy
It helps decide if I can leave the exam early or not LOL so I dont have to line up at those big crates to get my bag :)
I need 26/40 for business law to get a H2B :) not aiming for H1 cos its impossible
Post by: Gloamglozer on June 10, 2011, 08:54:07 pm
Lol yeah Chem was hard, anyone who found chem easy was a freeeeaaaak.
I did all the practice papers and studied forever, yet I think I just screw up under exam conditions. For me, it was reminiscent of 2009 midyear Chem, which none of you probably did. It was an extremely scarring experience, which causes me to mental blank in any exam which has any sense of time pressure. IT TOOK ME LIKE 20 MINUTES TO FIGURE OUT THAT STUPID Q4 MOLECULE. LIKE, IT SHOULDN'T BE THAT HARD.
Lawl. I did, but failed (miserably).
Post by: Elnino_Gerrard on June 10, 2011, 11:07:48 pm
Oh I hate those crates, people are like vultures trying to get into those thingsI love how you always work out what mark you need to get a H1 happy
It helps decide if I can leave the exam early or not LOL so I dont have to line up at those big crates to get my bag :)
I need 26/40 for business law to get a H2B :) not aiming for H1 cos its impossible
Bahaha i just go through the other side. :P .Everyone usually crowds round one side xD
Post by: simpak on June 11, 2011, 11:44:08 am
Lol yeah Chem was hard, anyone who found chem easy was a freeeeaaaak.
I did all the practice papers and studied forever, yet I think I just screw up under exam conditions. For me, it was reminiscent of 2009 midyear Chem, which none of you probably did. It was an extremely scarring experience, which causes me to mental blank in any exam which has any sense of time pressure. IT TOOK ME LIKE 20 MINUTES TO FIGURE OUT THAT STUPID Q4 MOLECULE. LIKE, IT SHOULDN'T BE THAT HARD.
Lawl. I did, but failed (miserably).
I know right that was the reason I got such a crappy chem score - B+ in the midyear, how awful.
Post by: Russ on June 11, 2011, 12:10:22 pm
Post by: happyhappyland on June 11, 2011, 01:44:19 pm
Lol yeah Chem was hard, anyone who found chem easy was a freeeeaaaak.
I did all the practice papers and studied forever, yet I think I just screw up under exam conditions. For me, it was reminiscent of 2009 midyear Chem, which none of you probably did. It was an extremely scarring experience, which causes me to mental blank in any exam which has any sense of time pressure. IT TOOK ME LIKE 20 MINUTES TO FIGURE OUT THAT STUPID Q4 MOLECULE. LIKE, IT SHOULDN'T BE THAT HARD.
Lawl. I did, but failed (miserably).
I know right that was the reason I got such a crappy chem score - B+ in the midyear, how awful.
The difference between VCE chem exams and uni chem exams is that its more about perfection than knowledge. Getting the answer right and making no mistake was essential to get a good mark whilst in uni chem.. you can lose 47 :)
Post by: simpak on June 11, 2011, 01:55:34 pm
Lol yeah Chem was hard, anyone who found chem easy was a freeeeaaaak.
I did all the practice papers and studied forever, yet I think I just screw up under exam conditions. For me, it was reminiscent of 2009 midyear Chem, which none of you probably did. It was an extremely scarring experience, which causes me to mental blank in any exam which has any sense of time pressure. IT TOOK ME LIKE 20 MINUTES TO FIGURE OUT THAT STUPID Q4 MOLECULE. LIKE, IT SHOULDN'T BE THAT HARD.
Lawl. I did, but failed (miserably).
I know right that was the reason I got such a crappy chem score - B+ in the midyear, how awful.
The difference between VCE chem exams and uni chem exams is that its more about perfection than knowledge. Getting the answer right and making no mistake was essential to get a good mark whilst in uni chem.. you can lose 47 :)
It is true, which makes me feel much better about my life. Here's to hoping we don't lose more than 47, I wish us both luck!