Exam Discussion

[caluuu]

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?

[WhoTookMyUsername]

oh (f...) dw R (variable) IS 2000 ohm, not the R(LDR)
my bad
(had a heart attack for a sec)

[tjgoems]

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 

[max payne]

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.

[jaydee]

its kinda assumed u can read that LDR is 3000 ohms cos it gives u the 2.5 lux

[WhoTookMyUsername]

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

[WhoTookMyUsername]

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)

[tjgoems]

ohh yeah true thanks. saved me =)

[afridilegend]

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...!!

[vagrantshades]

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.

[Bhootnike]

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?

[Bhootnike]

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?

[pi]

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...

[WhoTookMyUsername]

oh how i love you spesh <3

[vagrantshades]

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.