VCE Physics Exam Discussion and Questions

[Syndicate]

not too sure but i think q10 mc was implying simply motion in a completely different reference frame, any further clarification on this

Laws of motion only apply for inertial frames (non-accelerating), so the results in an accelerating and non-accelerating trains would differ.

[The Bus]

This exam seems on the easier side compared to recent past ones, although I could only understand the content that is shared from the past study design.

Some of the diagrams, especially the ones for the photoelectric effect looks literally identical to diagrams in older exams.

I also wouldn’t rely on last year’s cut-off as a reference since one of the electronics question (removed from the study design) was pretty challenging - only because it was sus af.

[Theodric_Ironfist]

Question 19 seems ambiguous to me. What are they asking?

Evaluate Mary and Roger's statements in light of the current understanding of light and matter. Describe two experiments that show the difference between Mary and Roger's views.

While Mary is correct that electrons produce a diffraction pattern (crystals, single-slit), I think Roger is correct in saying that electrons are particles, due to the fact that they can be deflected using a magnetic field (JJ Thomson), and as such carry a charge, as you would expect for a particle.

Thoughts?

[Spencer_Luscombe]

What did everyone get for the projectile motion question?

[Theodric_Ironfist]

What did everyone get for the projectile motion question?

3.975 m = 4.0 m

Solutions are above ^^^

[angela666]

Shouldn't the answer in question 11 a be doubled? coz its asking for the lifetime not the half-life??

[Bri MT]

Shouldn't the answer in question 11 a be doubled? coz its asking for the lifetime not the half-life??

If you double the half life a quarter of the particles remain, they don't all deteriorate

[Curious^_^]

Here are the answers that were uploaded to VCE Discussionspace; Thanks to whoever shared them originally

https://www.dropbox.com/s/v3dxlkiypysl0t0/Physics%202017.pdf?dl=0

Thanks Dowe for posting the link to the question and answer. I went through the questions to get a feel of what my son went through. In doing so, I have made some comments to the answers. I attached the Word file of my comments. Pls let me know if you find any errors.

[Deonyi]

I think Q13 can be solved through equating energies. The energy at the top is the same as the energy at the bottom. Whereas at the equilibrium point Ek=0, Us≠0 and Ug≠0. At the botton, Ek=0, Us≠0 and Ug=0. At the top, Ug≠0 and everything else is 0. Thus, you can equate.

[ntal8]

Hey Guys,
Remember the question asking us to evaluate 3 responses to wether or not the speed of the satellite will have to be the same, more, or less than Charon(moon of pluto)?? I know Melissa is correct, however, in the heat of the moment, in my final/ concluding statement of my response(having justified everything using formulaic proofs), I just wrote "hence the speed of the satellite will be the same as the speed of Charon"(which is essentially what Melissa says). Will I still get the last mark?