ATAR Notes: Forum
Archived Discussion => 2012 => Mid-year exams => Exam Discussion => Victoria => Physics => Topic started by: lokdog on June 12, 2012, 01:58:57 pm
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How do you think you went? Do you reckon the exam was harder or easier than past exams? What were some question you found challenging? Exam discussion general!
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I thought it was a touch easier than last year, however it was longer. Materials was nice i thought, and I made up the time I lost in the others.
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Lol i got raped :p lost at least 8-10 marks
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Lol i got raped :p lost at least 8-10 marks
That isn't "raped" :P
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Lol i got raped :p lost at least 8-10 marks
That isn't "raped" :P
Asian raped actually :P
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Nah not even that, 8-10 is decent imo
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There were a lot of explain questions, which i wrote essays explaining and describing, but my final answer in the end was wrong. Would i still get 2/3 marks in that case? or 1/2
Oh well Hope i still scrape an a+ :p
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when will exams answers be up? and where?
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It was a bit harder than previous years I reckon because of how many worded questions there was.
I know of about 5marks I lost so hopefully didn't lose to many on the other questions...
That stupid towing the logs question got me because I forgot about the force due to acceleration on the second log >:(
What did everyone write for the action reaction question with the 2kg mass suspending by the ceiling.
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It was a bit harder than previous years I reckon because of how many worded questions there was.
I know of about 5marks I lost so hopefully didn't lose to many on the other questions...
That stupid towing the logs question got me because I forgot about the force due to acceleration on the second log >:(
What did everyone write for the action reaction question with the 2kg mass suspending by the ceiling.
I wrote the force by the ceiling as the reaction force...but i just know thats wrong wbu?
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I wrote tension and up, but I honestly am not sure at all...
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I wrote tension and up, but I honestly am not sure at all...
Yeah thats what everyone was saying so I think your right :D Idk why i put ceiling, I guess i thought the fact that the string had no mass,so it didnt apply to it :s
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TOO MUCH EXPLANATION! I couldn't explain why diode 1 had the higher fraction of electrical energy converted to light energy and also Q7 of StrucMat confused me a bit for some reason
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Wasnt it the force of the mass on the earth?
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Action force was the gravitational force by the Earth on the 2kg sphere, hence the reaction force would be the gravitational force by the sphere on the Earth. Remember that action-reaction forces never act on the same body.
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What did everyone write for the action reaction question with the 2kg mass suspending by the ceiling.
I said that force that attracts the sphere to the Earth is equal and opposite to the force that the object exerts on the Earth. And due to the relative masses, acceleration of the Earth towards the sphere is negligible. But generally, very poorly done. I choked on far too many questions.
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I wrote tension and up, but I honestly am not sure at all...
Yeah that's about it. But the reaction to the top mass was the tension up minus the bit of tension that was added for the second mass.
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I know this should be in another thread, but does anyone know where the find the 2012 SoM application, the one is VCAA website is the 2011 one I think
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Action force was the gravitational force by the Earth on the 2kg sphere, hence the reaction force would be the gravitational force by the sphere on the Earth. Remember that action-reaction forces never act on the same body.
wow..I dont think I would ever have thought of that if I had a million years... Well thats what I get for neglecting theory questions during study :)
Anyway does anyone know generaly when the itute answers would be up?
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I don't think the reaction force is the force on the earth because it is connecting to the string so there is no way it could be that...
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The log question was a bitch to me, and yeah tension and up sounds right :)
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Over all I was pretty happy with the exam. I think it may of actually been easier then 2011's. But I did do about 5 exams between my 2011 practice exam and today. So that might of made a difference.
The only thing I think I got wrong was question 7 (I think it was) in structures and materials where you had to find the energy due to the strain or w/e on the steel rod/wire. Completely forgot how to do that and I was there counting squares and multiplying by volume, area and everything and just couldn't find an answer. So I think I guessed either C or D which were 900J or 9000J I think. Other than that I was pretty happy with the 4 mark explanation questions such as the diodes and the only other thing I"m not so sure on was the one where you had to draw an arrow at point P indication which direction the mass would go when the string breaks. I dunno why but I just got confused, to used writing CF as an arrow going towards the centre. So I guessed once the string broke it'd go directly away from the centre.
I found I didn't have much time to spare... only just finished with 5 mins to go luckily thanks to some easy S&M questions which involved little work, just logic to complete. How did everyone else find things for time?
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I don't think the reaction force is the force on the earth because it is connecting to the string so there is no way it could be that...
Yeah, reaction force of the earth moving towards the ball would only be if the ball were free falling?
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I forgot work done =change in energy....
HOW GOOD AM I!?
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fml
somehow managed to divide by wrong number in power q . lost 1- 2 marks at least fml
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Over all I was pretty happy with the exam. I think it may of actually been easier then 2011's. But I did do about 5 exams between my 2011 practice exam and today. So that might of made a difference.
The only thing I think I got wrong was question 7 (I think it was) in structures and materials where you had to find the energy due to the strain or w/e on the steel rod/wire. Completely forgot how to do that and I was there counting squares and multiplying by volume, area and everything and just couldn't find an answer. So I think I guessed either C or D which were 900J or 9000J I think. Other than that I was pretty happy with the 4 mark explanation questions such as the diodes and the only other thing I"m not so sure on was the one where you had to draw an arrow at point P indication which direction the mass would go when the string breaks. I dunno why but I just got confused, to used writing CF as an arrow going towards the centre. So I guessed once the string broke it'd go directly away from the centre.
I found I didn't have much time to spare... only just finished with 5 mins to go luckily thanks to some easy S&M questions which involved little work, just logic to complete. How did everyone else find things for time?
Finished with like a minute to spare lol, it was so long!
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I forgot work done =change in energy....
HOW GOOD AM I!?
dw its only one mark :)
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i was proud to see drawing of the circuit again! :D how ever too many explaining questions TT whoever thought the first question would be spring related-.- but it was really easy. Did everyone get B as the answer in order for the ball to be stationary?
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What was the initial tension in T1?
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I added the frictional forces to find T1 i think it was 800N..
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fml
somehow managed to divide by wrong number in power q . lost 1- 2 marks at least fml
same i got them both = 0.1 :/
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when's the earliest we can order SoM?
fml
somehow managed to divide by wrong number in power q . lost 1- 2 marks at least fml
same i got them both = 0.1 :/
i got one of them right
the otherone i divided by the wrong number somehow, need to see a copy of the exam
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i was proud to see drawing of the circuit again! :D how ever too many explaining questions TT whoever thought the first question would be spring related-.- but it was really easy. Did everyone get B as the answer in order for the ball to be stationary?
Yes, inorder to be stationary the forces must be in equilibrium therfore the horizontal forces must be balanced as well as the vertical forces. B was the only one where the horizontal and vertical componants of the forces could be balanced.
Thats sort of what i wrote... I was a bit surprised by that question since it seemed like it belonged in the M&S section.
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I added the frictional forces to find T1 i think it was 800N..
Yay me too! :)
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TOO MUCH EXPLANATION! I couldn't explain why diode 1 had the higher fraction of electrical energy converted to light energy and also Q7 of StrucMat confused me a bit for some reason
For the diode explanation your referring to I applied the percentage efficiency formula for each diode. In the end Diode 1 was more efficient (75%). %(efficiency)=(practical power dissipated)/(theoretical power dissipation)x100.
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I don't think the reaction force is the force on the earth because it is connecting to the string so there is no way it could be that...
Yeah, reaction force of the earth moving towards the ball would only be if the ball were free falling?
Just because the ball isn't falling doesn't mean there isn't a force present, it just happens that the tension in the string is equal to the weight force.
Action-Reaction forces only ever act on two different bodies. The question explicitly stated that the action force is the weight (gravitational force by Earth). If you stated that the tension was the reaction force, then I believe it would be incorrect as both the tension and weight force act on the sphere.
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if i wrote D1 with no explanation, would I at least get 1 mark ?
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TOO MUCH EXPLANATION! I couldn't explain why diode 1 had the higher fraction of electrical energy converted to light energy and also Q7 of StrucMat confused me a bit for some reason
For the diode explanation your referring to I applied the percentage efficiency formula for each diode. In the end Diode 1 was more efficient (75%). %(efficiency)=(practical power dissipated)/(theoretical power dissipation)x100.
Thats whati got except i got 3/4 and 2/3 since it asked for fractions not percentages. For the draw a circuit did you get 2000 ohms resistor and the V out on the Light dependant thingi since its resistance increases with decreasing light intensity?
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TOO MUCH EXPLANATION! I couldn't explain why diode 1 had the higher fraction of electrical energy converted to light energy and also Q7 of StrucMat confused me a bit for some reason
For the diode explanation your referring to I applied the percentage efficiency formula for each diode. In the end Diode 1 was more efficient (75%). %(efficiency)=(practical power dissipated)/(theoretical power dissipation)x100.
Thats whati got except i got 3/4 and 2/3 since it asked for fractions not percentages. For the draw a circuit did you get 2000 ohms resistor and the V out on the Light dependant thingi since its resistance increases with decreasing light intensity?
Yes. About my response to that diode question; it's still acceptable do you think?
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Yes it was 2000 ohms, I did 3000*4/6=1500 lol
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TOO MUCH EXPLANATION! I couldn't explain why diode 1 had the higher fraction of electrical energy converted to light energy and also Q7 of StrucMat confused me a bit for some reason
For the diode explanation your referring to I applied the percentage efficiency formula for each diode. In the end Diode 1 was more efficient (75%). %(efficiency)=(practical power dissipated)/(theoretical power dissipation)x100.
Thats whati got except i got 3/4 and 2/3 since it asked for fractions not percentages. For the draw a circuit did you get 2000 ohms resistor and the V out on the Light dependant thingi since its resistance increases with decreasing light intensity?
Yes. About my response to that diode question; it's still acceptable do you think?
well they specifically said fractions so i cant imagine them taking marks off. So it might be one of those questions where both would be accepted
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Surprised that no one has used the range formula in order to find the velocity of the projectile motion. And I thought hookes law only has one formula which is f = kx :/. Left like 6 questions thanks to my school being indie and picking relativity as detailed study. Mums pretty pissed about leaving 6 questions... sigh
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For the draw a circuit did you get 2000 ohms resistor and the V out on the Light dependant thingi since its resistance increases with decreasing light intensity?
I set it up how you said, but with a 1000 ohm resistor. I probably made a stupid mistake, not confident at all right now.
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Fml. With that ball q.. I wrote "north" instead of up lol. Will I lose a mark for that?
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The output signal was clipped off and inverted? and for the circutary drawing i got 1000 ohms as the resistor since you knew the current from the previous question...
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reading this thread makes me feel awful.
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For the draw a circuit did you get 2000 ohms resistor and the V out on the Light dependant thingi since its resistance increases with decreasing light intensity?
I set it up how you said, but with a 1000 ohm resistor. I probably made a stupid mistake, not confident at all right now.
Yeah I got 2000 ohms for that.
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Surprised that no one has used the range formula in order to find the velocity of the projectile motion. And I thought hookes law only has one formula which is f = kx :/. Left like 6 questions thanks to my school being indie and picking relativity as detailed study. Mums pretty pissed about leaving 6 questions... sigh
i did thattt ;)
for the tension in the rope with logs, why did some ppl say 800N?
if it wasnt accelerating, and if you consider tension in last rope, then ma = t - 400, where a =0, so t = 400 ?
and where did you say the rope broke?
Also, in elecronics, what resistance values did people use when designing the circuit?
looking forward to some solutions
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reading this thread makes me feel awful.
Hehe... same here. :'(
So far have learnt they wanted to actually know a fraction/percentage of power output for the 2 LED question. I only gave an amount. :(
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I got 2000 ohms but then I put the LED before the Vout for some reason ::)
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Solutions can be found here: http://www.itute.com/board/viewtopic.php?f=6&t=2478
:)
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Surprised that no one has used the range formula in order to find the velocity of the projectile motion. And I thought hookes law only has one formula which is f = kx :/. Left like 6 questions thanks to my school being indie and picking relativity as detailed study. Mums pretty pissed about leaving 6 questions... sigh
i did thattt ;)
for the tension in the rope with logs, why did some ppl say 800N?
if it wasnt accelerating, and if you consider tension in last rope, then ma = t - 400, where a =0, so t = 400 ?
and where did you say the rope broke?
Also, in elecronics, what resistance values did people use when designing the circuit?
looking forward to some solutions
As above I got 2000ohm for the resistor. As for the tension I got 800n too. Frictional force on each log was 400N so 400N + 400N =800N?
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lost 7 or 9 marks DAM>...
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so is it wrong if the 1000 ohm resistor was used? what did everyone get for S&M? i got :
1. D
2. A
3. C
4. D
5. A
6. A
7. B
8. D
9. B
10. B
11. C
12. C
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Fml. With that ball q.. I wrote "north" instead of up lol. Will I lose a mark for that?
dont think so! The output signal was clipped off and inverted? and for the circutary drawing i got 1000 ohms as the resistor since you knew the current from the previous question...
yes twas
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As above I got 2000ohm for the resistor. As for the tension I got 800n too. Frictional force on each log was 400N so 400N + 400N =800N?
oh, but, DAamn..
i justt went: consdering rope 2 only:
Fnet = t -400,
ma = t -400
0 = t-400
t = 400.
:'(
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Exam answers are here http://www.itute.com/board/viewtopic.php?f=6&t=2478
hope you all did well!!
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What was the resistance of the LDR in the draw-a-circuit question?
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for the tension in the rope with logs, why did some ppl say 800N?
if it wasnt accelerating, and if you consider tension in last rope, then ma = t - 400, where a =0, so t = 400 ?
and where did you say the rope broke?
I think the question asked for the tension in R1 which was pulling both logs. Fnet= 0 so T = FR = 400 + 400 = 800N
I said that R1 broke.
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Exam answers are here http://www.itute.com/board/viewtopic.php?f=6&t=2478
hope you all did well!!
thanks, sigh lost 4 marks for S&M
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wouldve lost marks for that log question then.
i said bloody 400 N for tension
and for the rope breaking one i found a =4ms^2.
fml.;9
hope to god those answers r wrong ... :(
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wouldve lost marks for that log question then.
i said bloody 400 N for tension
and for the rope breaking one i found a =4ms^2.
fml.;9
hope to god those answers r wrong ... :(
im pretty sure theyre right becoz me and a bunch of friends got the same answer.. sorry buddy lol
if it makes u feel any better i did a stupid mistake by explaining horizontal force instead of vertical for the ball question and screwed the diode question completely.
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For the draw a circuit did you get 2000 ohms resistor and the V out on the Light dependant thingi since its resistance increases with decreasing light intensity?
I set it up how you said, but with a 1000 ohm resistor. I probably made a stupid mistake, not confident at all right now.
Yeah I got 2000 ohms for that.
so did i :D 2000 ohms ftw
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Checked the itute answers and i got at least ~86/90. Thats the marks I was getting for trials so Im happy with that. does anyone have an idea of the A+ cutoffthis year?
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"Q1 tent: pole in compression 212N, B"
Was that B? I seem to recall having a for my first two answers. I better not have put down the wrong one... Maybe I should stop looking into things and making myself worry. I've already been cut down enough to not be shocked if I don't get an A+ and be happy if I get an A.
When can we find out our results from this exam? I didn't fast track anything last year, but still seem to recall people getting results before the end the the year?
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will they put answers up for special relativity on itute? cause for some reason our school chose that detailed study........
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Got 11 questions wrong in both motion and electricity.... I've done every practice exam there possibly is, finished checkpoints and in return I get 17 out of 28? I've been averaging mediums in all my SACs so I needed this.... Sigh....
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Anyone have an idea of what the cutoff for A+ would be like this year?
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im geussing 8 - 9 marks...
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How do people remember what they got on everything? I'd need to at least read the exam again to remember.
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"Q1 tent: pole in compression 212N, B"
Was that B? I seem to recall having a for my first two answers. I better not have put down the wrong one... Maybe I should stop looking into things and making myself worry. I've already been cut down enough to not be shocked if I don't get an A+ and be happy if I get an A.
When can we find out our results from this exam? I didn't fast track anything last year, but still seem to recall people getting results before the end the the year?
Answer A was the same thing but instead of compression they had "tension" which was wrong
So lucky with my materials and structures. Had three guesses and all of them were right.
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Answer A was the same thing but instead of compression they had "tension" which was wrong
So lucky with my materials and structures. Had three guesses and all of them were right.
Yeah I remember that and defiantly would of though compression. But still seem to remember seeing A and A for my first two answers and remembering how someone else in my class said they get paranoid when they start seeing A as the answer for a lot of things because according to them there's a lower chance of A being the correct answer when randomly picking 1.
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
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what was questoin 5b? i dont remember getting a 700N for an answer???!
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
Well apparently according to the lecturer at a Physics lecture I went to before this. No one got 100% on the 2011 mid year exam. So I'd imagine it is very possible.
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
For Physics? You can drop more than 1. Got 86/90 in midyear, ended up with a 50 (and a friend got 88.5 and 88 and got 50).
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what was questoin 5b? i dont remember getting a 700N for an answer???!
Yeah, I don't remember that question. But I don't remember getting 700N as the answer for anything...
We need a copy of this exam..
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
For Physics? You can drop more than 1. Got 86/90 in midyear, ended up with a 50 (and a friend got 88.5 and 88 and got 50).
Awesome! That's good to know. I'll just have to work hard for the Unit 4 exam and hope all goes well then!
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
For Physics? You can drop more than 1. Got 86/90 in midyear, ended up with a 50 (and a friend got 88.5 and 88 and got 50).
Awesome! That's good to know. I'll just have to work hard for the Unit 4 exam and hope all goes well then!
That's the attitude!!!
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what was questoin 5b? i dont remember getting a 700N for an answer???!
Yeah, I don't remember that question. But I don't remember getting 700N as the answer for anything...
We need a copy of this exam..
I'm pretty sure I got that. I did
T = ma + Fr
T = 600*0.5 + 400
T= 300 + 400
T= 700
At least I'm pretty sure that's how it's solved?
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
For Physics? You can drop more than 1. Got 86/90 in midyear, ended up with a 50 (and a friend got 88.5 and 88 and got 50).
Yeah but three years ago losing more than 1 meant no 50 :P Last year was just harder and apparently this one was easier than last year's
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Ahhh dumbest mistake. I set the Vout at 2.5V and ended up with a resistor variable of 9000ohms. I can't believe I didn't even pick that up. xD
But that's the only thing I seem to have got wrong...
Curious though, people who do get a 50 in this subject, do they get 100% on both exams or is it possible to still get that score if you lost a mark on each?
For Physics? You can drop more than 1. Got 86/90 in midyear, ended up with a 50 (and a friend got 88.5 and 88 and got 50).
Yeah but three years ago losing more than 1 meant no 50 :P Last year was just harder and apparently this one was easier than last year's
Yeah but three years ago was the 2009 exam! Wasn't that the easier exam ever? I'm pretty sure this year's was harder and that. A lot of people may be losing marks on the explanation questions. :/
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what was questoin 5b? i dont remember getting a 700N for an answer???!
Yeah, I don't remember that question. But I don't remember getting 700N as the answer for anything...
We need a copy of this exam..
I'm pretty sure I got that. I did
T = ma + Fr
T = 600*0.5 + 400
T= 300 + 400
T= 700
At least I'm pretty sure that's how it's solved?
oh yeah thanks, remember now woot! got that i got 81/90 which is good for me considering i did not do any studying for physics until 2 weeks before the exam.. literally did not know how to do any questions lol
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are the itute answers already up, cos i cant find them, could someone post a link if they are up
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http://www.itute.com/board/viewtopic.php?f=6&t=2478
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seems i only dropped the silly mistake
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Thanks :), lost 12 marks would that be a B+ to an A+
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There were so many explain questions FML
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lol at how many people are reading this right now
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Thanks :), lost 12 marks would that be a B+ to an A+
meant A-
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how does everyone remember how many marks each question was worth?
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well i know for sure that i aced the detailed study, like a boss, as for the rest we see how it goes. Thought it was a bit of bullshit that there were a lot of explanations to be written not like the other years, VCAA did finish with a bang as this is the final year for mid years.
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how does everyone remember how many marks each question was worth?
this^ ! i wanna figure out how i went
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Are Statements Of Marks for mid-years available at the same time as for end of year exams or do they come out earlier?
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how does everyone remember how many marks each question was worth?
this^ ! i wanna figure out how i went
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how does everyone remember how many marks each question was worth?
this^ ! i wanna figure out how i went
Which ones? I think I can remembera few from memory
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I am over it.
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does anyone have a copy of the exam (scan please?0
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look at xangelic's post in this section - in veges thread!!
im surprised at how i went, didnt go tooooo bad. i remember most of my answers.
whatdya reckon A+ will be, i think bout 82-85+. ?
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defs not 85. and it depends on how tight they mark SA explanation
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defs not 85. and it depends on how tight they mark SA explanation
Lol, well, i wont place any bets on it, but im hoping A is atleast >85%!
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
I believe examiners don't are about scientific notation. Just so long as they can see you're answers correct. Oh and thanks, I'm pretty sure I've got this one correct as I wrote the same as you.
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I took a completely different approach with the power output one...
I used V=I^2R, using the voltages from the graphs and currents from the question, to find R for each.
I then said that D1 is more efficient because it had a lower resistance then D2, and as P=V^2/R, the lower the resistance, the larger the power...
Sigh.
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yeah you can't do that cos they're diodes not resistors
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WTF
ITUTE HAS RESISTANCE LDR (SWITCHING CIRCUIT) AT 2000 OHM
ISNT IT 3000 OHM WTF
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I somehow did the calculations wrong on that diodes question both having 50% output something...
What marks do you get for that kind of answer?
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oh (f...) dw R (variable) IS 2000 ohm, not the R(LDR)
my bad
(had a heart attack for a sec)
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I thought the conservation of momentum question was weird. Its like you had to assume positive was right and negative was left... If you do the opposite and consider positive as left it would give u a momentum that is less than the initial 1.2kg block. so shouldnt they have stated that positive is right from the start? or did i misinterpret the question :-\
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oh (f...) dw R (variable) IS 2000 ohm, not the R(LDR)
my bad
(had a heart attack for a sec)
lol...I think it would be best if you stopped looking into it.
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its kinda assumed u can read that LDR is 3000 ohms cos it gives u the 2.5 lux :P
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yeah... well i read it as 4000 first up... then i went over it after i finished and realised (phew)
didn't do that with my other blantant mistake :'(
adrenaline is just annoying
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I thought the conservation of momentum question was weird. Its like you had to assume positive was right and negative was left... If you do the opposite and consider positive as left it would give u a momentum that is less than the initial 1.2kg block. so shouldnt they have stated that positive is right from the start? or did i misinterpret the question :-\
no
either way
it's -v-u
or v--u
(and after that your concerned about magnitude)
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ohh yeah true thanks. saved me =)
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So angry... Couldn't complete the momentum question because the time was up >:(
Knew the answers but I had spent heaps of time writing essays for the other answers (there were loads of explanation questions) and therefore couldn't finish it off... All I needed was just about 120 seconds but :(
And I hope I get a lenient marker coz I knew the concept of why the tension would be more at the bottom than the top for that string question but couldn't explain it properly
Did quite a few practice exams and none of them had so many explanation questions
I really wanted to get a 50 for physics...!!
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yeah... well i read it as 4000 first up... then i went over it after i finished and realised (phew)
didn't do that with my other blantant mistake :'(
adrenaline is just annoying
Ikr? It happens to all of us. I got 9000 ohms for the variable resistor lmao. My common sense went out the window on that one. I took 2.5 lux as 2.5V for Vout as well. Oops. ;)
But what I like about science is that you can lose a couple of marks in each exam and still get a 49 or 50, unlike Maths (except Specialist?) where you've lost your chances once that happens.
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I thought the conservation of momentum question was weird. Its like you had to assume positive was right and negative was left... If you do the opposite and consider positive as left it would give u a momentum that is less than the initial 1.2kg block. so shouldnt they have stated that positive is right from the start? or did i misinterpret the question :-\
i dont remember itute solutions, but what did people say for this question?
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I thought the conservation of momentum question was weird. Its like you had to assume positive was right and negative was left... If you do the opposite and consider positive as left it would give u a momentum that is less than the initial 1.2kg block. so shouldnt they have stated that positive is right from the start? or did i misinterpret the question :-\
i dont remember itute solutions, but what did people say for this question?
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But what I like about science is that you can lose a couple of marks in each exam and still get a 49 or 50, unlike Maths (except Specialist?) where you've lost your chances once that happens.
Um, I know a guy from my cohort who got 100% on both exams with good SACs and got 49 in spesh, and losing 2.5 marks over both got you like 45 or something...
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oh how i love you spesh <3
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But what I like about science is that you can lose a couple of marks in each exam and still get a 49 or 50, unlike Maths (except Specialist?) where you've lost your chances once that happens.
Um, I know a guy from my cohort who got 100% on both exams with good SACs and got 49 in spesh, and losing 2.5 marks over both got you like 45 or something...
Scratch that then! I wasn't sure since I don't do it. XD But yeah! Maths subjects are nasty that way. Sciences are awesome cause you can lose marks and still do well! So hopefully I'll manage with my 4 midyears muah ha ha.
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more accurately that's why bio is awesome
can lose probably up to 14 marks in a good year over both exams and still net a 50!
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But what I like about science is that you can lose a couple of marks in each exam and still get a 49 or 50, unlike Maths (except Specialist?) where you've lost your chances once that happens.
Um, I know a guy from my cohort who got 100% on both exams with good SACs and got 49 in spesh, and losing 2.5 marks over both got you like 45 or something...
Scratch that then! I wasn't sure since I don't do it. XD But yeah! Maths subjects are nasty that way. Sciences are awesome cause you can lose marks and still do well! So hopefully I'll manage with my 4 midyears muah ha ha.
47 in my case...(lost 2.5-3 marks on spesh exam 2)
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more accurately that's why bio is awesome
can lose probably up to 14 marks in a good year over both exams and still net a 50!
Seriously? So if I've potentially lost 2 marks on this exam I'm still in the running for a 50? Whoot!
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if you've lost 2 marks you'll very likely have topped the state on this exam :\
no matter how good you are i doubt you'll only have lost 2, bio markers far more pedantic than you probably realise xD
most years 2 70's will net you a 50
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if you've lost 2 marks you'll very likely have topped the state on this exam :\
no matter how good you are i doubt you'll only have lost 2, bio markers far more pedantic than you probably realise xD
most years 2 70's will net you a 50
Yeah, that's true. XD My teacher calls them cranky old men with attitude problems and tells us to underline everything to make sure they see it. Alright, well I hope that I haven't lost too many marks then! Hopefully losing 1-2 marks on Physics should also keep us in the running for a 49-50 depending on the Unit 4 exam.
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is it possible guys to get a 35+ ss for physics if i get an average of A for my sacs for exam 1 B-B+ and an A for end of year?
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is it possible guys to get a 35+ ss for physics if i get an average of A for my sacs for exam 1 B-B+ and an A for end of year?
Well I dont know if it's similar but I got B+ on my exam, A+ and A for sacs and got 35 for english language so I think it's possible.
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Can anyone explain why the first question of the materials and structures section was B and not D?
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Can anyone explain why the first question of the materials and structures section was B and not D?
Uhhh what was option D? The pole had to be in compression, and the force was 212N because you had to find the vertical component of the ties, so you had to do 100sin(45) x 3 for the total force and that gave you 212N. :)
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Option D was the 300N, compression one. So disappointed, I assumed that the ground exerting a force on the wire had to be vertical component. Geez louise. :(
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
Your answer "1687.5" isn't actually exact. The information given by the question is not exact, either. You've gone and put in an answer more exact than the question (more significant figures than the numbers from the question). It should have been in less significant figures. But you'll only lose about 2 marks for the entire exam if you do that for all the answers, I think.
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
Your answer "1687.5" isn't actually exact. The information given by the question is not exact, either. You've gone and put in an answer more exact than the question (more significant figures than the numbers from the question). It should have been in less significant figures. But you'll only lose about 2 marks for the entire exam if you do that for all the answers, I think.
how can you have an answer more exact then the question:s i just simply used their values, got a solution and put it in the answer. Im pretty sure my answer is more "exact" then if I wouldve round it off. btw this was the only question I did that on..
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
Your answer "1687.5" isn't actually exact. The information given by the question is not exact, either. You've gone and put in an answer more exact than the question (more significant figures than the numbers from the question). It should have been in less significant figures. But you'll only lose about 2 marks for the entire exam if you do that for all the answers, I think.
over the course of the year, all the assessors ive met have said that they dont give a doodle about sig figs. so as long as you hit up a decent amount of decimals you should be fine.
thank god physics isnt as pedantic as chem about sig figs: p
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
Your answer "1687.5" isn't actually exact. The information given by the question is not exact, either. You've gone and put in an answer more exact than the question (more significant figures than the numbers from the question). It should have been in less significant figures. But you'll only lose about 2 marks for the entire exam if you do that for all the answers, I think.
how can you have an answer more exact then the question:s i just simply used their values, got a solution and put it in the answer. Im pretty sure my answer is more "exact" then if I wouldve round it off. btw this was the only question I did that on..
I don't think it matters for physics how many significant figures your answer is and i doubt you would lose marks
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yeh my physics teacher says they dont really care LOL if it looks close enough then all good!
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fml I just realised that for one of the answers (it was 700, forgot what question), I wrote '700' in a rush and I think the examiner might think it looks like 790.. fkfmaksdajsdkk LET'S HOPE HE/SHE IS TIRED AND DOESNT NOTICE THE JOINING BETWEEN THE TWO 0'S :(
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fml I just realised that for one of the answers (it was 700, forgot what question), I wrote '700' in a rush and I think the examiner might think it looks like 790.. fkfmaksdajsdkk LET'S HOPE HE/SHE IS TIRED AND DOESNT NOTICE THE JOINING BETWEEN THE TWO 0'S :(
did you write your answer in your working out...thats why I always do so they might look at that
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The question that asked about the Apollo height above the moon? You converted the 2 hours into seconds before subbing into the period question, right? After you solved for r, did you guys subtract the radius of the moon from that?? :o
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fml I just realised that for one of the answers (it was 700, forgot what question), I wrote '700' in a rush and I think the examiner might think it looks like 790.. fkfmaksdajsdkk LET'S HOPE HE/SHE IS TIRED AND DOESNT NOTICE THE JOINING BETWEEN THE TWO 0'S :(
I think if it's ambiguous you'll get the mark, where as if it looks like a distinct '9' then maybe not, but if you included it in the solutions than you'll probably get the mark also
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How well do we need to do in the exams to get a study score of 48 plus. is 95% good enough?
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How well do we need to do in the exams to get a study score of 48 plus. is 95% good enough?
Defs. Last year with a 96% in the midyear you could get 50.
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How well do we need to do in the exams to get a study score of 48 plus. is 95% good enough?
Defs. Last year with a 96% in the midyear you could get 50.
I always thought i would have to get 100% to get a 50, lol.
I got all of the calculation questions right and all the multiple choice, I don't know how harsh the examiners will be on my worded answer question. I'm from germany and just came to australia a year ago so my english isn't perfect.
In my opinion the exam-questions were as hard/easy as from the last years, but it felt longer. I think students, who were aiming for any percentage below 85% will get it.
The projectile motion question was probably hard for many students.
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How well do we need to do in the exams to get a study score of 48 plus. is 95% good enough?
Defs. Last year with a 96% in the midyear you could get 50.
I always thought i would have to get 100% to get a 50, lol.
I got all of the calculation questions right and all the multiple choice, I don't know how harsh the examiners will be on my worded answer question. I'm from germany and just came to australia a year ago so my english isn't perfect.
In my opinion the exam-questions were as hard/easy as from the last years, but it felt longer. I think students, who were aiming for any percentage below 85% will get it.
The projectile motion question was probably hard for many students.
Du kommst wirklich aus Deutschland? Ich glaube, dass die Prüfer nicht so eng sind! Und dein Englisch ist sehr gut.
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How well do we need to do in the exams to get a study score of 48 plus. is 95% good enough?
Defs. Last year with a 96% in the midyear you could get 50.
I always thought i would have to get 100% to get a 50, lol.
I got all of the calculation questions right and all the multiple choice, I don't know how harsh the examiners will be on my worded answer question. I'm from germany and just came to australia a year ago so my english isn't perfect.
In my opinion the exam-questions were as hard/easy as from the last years, but it felt longer. I think students, who were aiming for any percentage below 85% will get it.
The projectile motion question was probably hard for many students.
Du kommst wirklich aus Deutschland? Ich glaube, dass die Prüfer nicht so eng sind! Und dein Englisch ist sehr gut.
Yes, i came last year into the second half of year 11, so I sadly have only 5 subjects counting for my ATAR and because I decided only about 2 month ago that I'm actually staying until the end of year 12 i don't have German as a subject :(.
Anyways too much off-topic.
How many off you guys used dot-points for the worded answer ones? I never really feel confortable doing that so I wrote some longer paragraphs for those questions.
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How well do we need to do in the exams to get a study score of 48 plus. is 95% good enough?
Defs. Last year with a 96% in the midyear you could get 50.
I always thought i would have to get 100% to get a 50, lol.
I got all of the calculation questions right and all the multiple choice, I don't know how harsh the examiners will be on my worded answer question. I'm from germany and just came to australia a year ago so my english isn't perfect.
In my opinion the exam-questions were as hard/easy as from the last years, but it felt longer. I think students, who were aiming for any percentage below 85% will get it.
The projectile motion question was probably hard for many students.
Du kommst wirklich aus Deutschland? Ich glaube, dass die Prüfer nicht so eng sind! Und dein Englisch ist sehr gut.
Yes, i came last year into the second half of year 11, so I sadly have only 5 subjects counting for my ATAR and because I decided only about 2 month ago that I'm actually staying until the end of year 12 i don't have German as a subject :(.
Anyways too much off-topic.
How many off you guys used dot-points for the worded answer ones? I never really feel confortable doing that so I wrote some longer paragraphs for those questions.
Dot points makes it easier because you try to link each dot point to a mark. I don't think anyone can have perfect English. Your English is so good I don't think anyone would've guessed that you were from Germany with only 1 year experience in Australia.
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does anyone know how harsh physics markers are on how you present your answer. For example, for the sprink constant k, i put the exact answer, 1687.5 while itute had 1.7x10^3. Is this okay?
Your answer "1687.5" isn't actually exact. The information given by the question is not exact, either. You've gone and put in an answer more exact than the question (more significant figures than the numbers from the question). It should have been in less significant figures. But you'll only lose about 2 marks for the entire exam if you do that for all the answers, I think.
how can you have an answer more exact then the question:s i just simply used their values, got a solution and put it in the answer. Im pretty sure my answer is more "exact" then if I wouldve round it off. btw this was the only question I did that on..
The more significant figures a number has, the more accurate it is (closer to its true value) which is to say that all values given to you are inaccurate to some degree. That is why you often see "correct to x decimal places". With more decimal places, the answer is more correct, thus more exact but still not absolutely exact. Therefore if your answer has more significant figures than the question then it is more exact that the question. I think that is the whole purpose of significant figures.