Physics Examination Discussion

[joey7]

Do you guys reckon for question 1b its possible to equate loss of GPE to work done and solve for force from there, or would I have lost all three marks??

[belsebob]

Do you guys reckon for question 1b its possible to equate loss of GPE to work done and solve for force from there, or would I have lost all three marks??

There was still kinetic energy at the instant when the object was stopped, hence you would have to find loss in gpe and the gain in kinetic energy

[joey7]

There was still kinetic energy at the instant when the object was stopped, hence you would have to find loss in gpe and the gain in kinetic energy

Damn, you reckon I'll lose all three marks?

[lzxnl]

It's a possibility unfortunately; I don't have the marking scheme so I can't give a definitive answer.

The main issue is that the work done wasn't the main part of the question as people have mentioned.

[krissikos]

hey guys, for the path difference question it asks for the distance to the first dark band from the center of the interference pattern so most people would have done p.d=wavelength(n-.5). but what i noticed was the center of the interference pattern was a dark band so i said it was a full wavelength distance. am i wrong, i double checked the exam and there are nine dark bands and 8 light bands so i'm still not sure because most people have just done half a wavelength or something. it was a 3 mark question and its not a very difficult calculation, or am i maybe overthinking it?

[randomposter]

Center of the interference pattern is always a bright band.

[Chazef]

I just did 1.4*10^-3 * (0.5/2) if I remember correctly

[nokainvincible]

All of my (5 pens)ran out of ink, so half my paper is in pencil and the other half in pen.

YOLO to the max

[BananaPi]

At least your calculator battery didn't go flat after using it for four years!

[Thu Thu Train]

Exam was too easy I think we need to make VCE physics harder by introducing String Theory and Quantum Electrodynamics at the 5th grade level.

I'm just kidding guys I'm sure you all did amazing <3

[lzxnl]

I must say, this is probably the most difficult 3/4 physics exam, trial or VCAA, that I recall doing.


For sound people, for the question about the operating principles, don't velocity microphones and dynamic loudspeakers both use electromagnetic induction? I swear there were two answers to that multi choice question...

[Damoz.G]

I must say, this is probably the most difficult 3/4 physics exam, trial or VCAA, that I recall doing.


For sound people, for the question about the operating principles, don't velocity microphones and dynamic loudspeakers both use electromagnetic induction? I swear there were two answers to that multi choice question...

You know its hard when nliu uses the phrase "most difficult" in a sentence.

[casbanjo]

was it really hard? because (and i don't mean to sound like an ass) i didn't find this particular exam that hard. if it was hard that's probably a good thing for my study score though. 

[monty]

You know its hard when nliu uses the phrase "most difficult" in a sentence.

but its true, i thought it was going to be easy after seeing yesterday's chemistry exam.. but it was anything but that. Some trick questions, and quite lengthy - i didn't even get to finish!

[Dayman]

OK, this is scaring me. There's FIVE sections you have to do right?

I think peoples perception of difficulty vary. I think the difficulty lies in full marking the exam as there are questions that require a lot of thinking.