*SUGGESTED* SOLUTIONS

[jyce]

Pretty sure Structures & Materials Multiple Choice were;
AAC BBD BCD CD

I've had a few other pretty strong students agree with me but if some are still wrong I'm sorry.
Hope you all went well today & Thanks for posting these solutions.
One last thing, what mark do you think you'll need for an A+ on this paper? , last years was 128, do you think this year is around the same? I think i got somewhere between 133-137 based on these solutions & i'm praying that will get me in the 40's ahahaha

Thanks. I'll put those answers up.

And that score will definitely net you above a 40. Well done!

[ashmitch]

Thanks. I'll put those answers up.

And that score will definitely net you above a 40. Well done!

Oh thank god, i think i might've screwed my chances of getting a 40 in Methods after that exam 2 and definitely screwed it for Spec too after monday's exam, so hopefully Physics pulls through & saves my ATAR

[dave101]

Pretty sure Structures & Materials Multiple Choice were;
AAC BBD BCD CD

I've had a few other pretty strong students agree with me but if some are still wrong I'm sorry.
Hope you all went well today & Thanks for posting these solutions.
One last thing, what mark do you think you'll need for an A+ on this paper? , last years was 128, do you think this year is around the same? I think i got somewhere between 133-137 based on these solutions & i'm praying that will get me in the 40's ahahaha

I'm pretty confident that'll get you over 40. Nice stuff. I got 128/150 which was last years exact 40 raw. But this years exam seems much more doable and kids are saying its more easier which I assume is probs true. I hope mine would at least get me a 40 hahah

[ashmitch]

I'm pretty confident that'll get you over 40. Nice stuff. I got 128/150 which was last years exact 40 raw. But this years exam seems much more doable and kids are saying its more easier which I assume is probs true. I hope mine would at least get me a 40 hahah

I hope yours pulls 40 Raw too, because then mine will pull a bit above 40 Raw
Nah but seriously good luck man & hopefully it all goes well when it comes to results day.

[ashmitch]

Thanks. I'll put those answers up.

And that score will definitely net you above a 40. Well done!

Only thing i'm a little worried about was my SAC scores, i was only about an A for both semesters judging by last years distributions :/ So hopefully my exam score is good enough to keep me in the A+, i think we had a fairly good class too and the highest score on SAC's in the class was only 88% but we were all smashing exam papers & getting pretty good marks, so maybe our SAC's were just a bit too hard, HOPEFULLY they were too hard and that A of mine becomes an A+ haha

[Davos]

Thoughts on what SS a 140/150 could deliver?

[jyce]

Thoughts on what SS a 140/150 could deliver?

45+ I'm guessing

[menja12]

Q16f is worth 4 marks. It asked for the power losses to be related back to alan and Becky's model. Ie to mention that the factor 10 reduced power loss by factor 100

Sound question 10d? Because lambda is 0.1m at 3000hz, there is no single slit interference pattern and hence no hard edge.
Question 11 is d. No rooms are smaller than 0.1m so b is not even reasonable. Since sound bounces in room there is no single slit destructive interference to create the hard edge. So instead is the blurry edge.
Single slit interference patterns are not on course but the effect of waves in gaps is...

[Toddman]

For 26b I talked about the standing wave nature of electrons around a nucleus which is very differend from what you had, is that okay??

[jyce]

For 26b I talked about the standing wave nature of electrons around a nucleus which is very differend from what you had, is that okay??

I'm assuming you mean 20b, and yes that's fine. There were multiple answers you could have had for both 20a and 20b.

[jyce]

Q16f is worth 4 marks. It asked for the power losses to be related back to alan and Becky's model. Ie to mention that the factor 10 reduced power loss by factor 100

Sound question 10d? Because lambda is 0.1m at 3000hz, there is no single slit interference pattern and hence no hard edge.
Question 11 is d. No rooms are smaller than 0.1m so b is not even reasonable. Since sound bounces in room there is no single slit destructive interference to create the hard edge. So instead is the blurry edge.
Single slit interference patterns are not on course but the effect of waves in gaps is...

Yes, I'll fix 16f. Good point.
In regards to question 10 of sound, I remain convinced it's B and I've had people saying A and now your saying D. Until I get conclusive support for one answer, I will not be changing it.
And personally I think question 11 of sound is 'D' as well, but we've had some disagreement so both answers have remained.

[shadowhunterqwer]

quick question will i be penalised for sig figs?  (unlike methods/spesh,  phys  didnt specify how many decimal places they wanted)

[jyce]

quick question will i be penalised for sig figs?  (unlike methods/spesh,  phys  didnt specify how many decimal places they wanted)

No, unless you gave your answers to such a small number of significant figures that they are quite rounded from the true value.

[Orson]

@jyce, cheers for the answers. For 7c, I thought weightlessness only occurs if there is no gravitational force on the astronaut? Isn't it 'apparent weightlessness' for no normal force?

Yeah dude. I copied that from the VCAA solutions onto my cheat sheet, so it can't be wrong. Your answer is fine.

[jyce]

Yeah dude. I copied that from the VCAA solutions onto my cheat sheet, so it can't be wrong. Your answer is fine.

He's answer is not fine if he simply said that the astronaut has a weight. Yes, the astronaut has a weight but the question asked about whether the astronaut feels as if they have a weight; hence, discussion of the absence of a normal reaction was required.