Physics Predictions/Thoughts (8 Viewers)

[BionicMango]

I'm pretty sure you can just say
"It follows an elliptical orbit around two focuses, with earth being one of them. It reaches maximum velocity at P since it has the least amount of potential energy and greatest amount of kinetic energy as it is the point closest to Earth. It reaches minimum velocity ..."

I don't know why they include calculations and formulas lol

That’s what I thought, but their answer contradicts this one

 

[coolcat6778]

That’s what I thought, but their answer contradicts this one

matrix says the same thing as us. maybe someone at the marking centre tried to play smartass, cause clearly it will follow an eliptical orbit.

this isn't the first time HSC physics solutions were totally wrong

Ai's answer with jargon, which still supports our answers

The satellite has received an impulsive tangential boost at point P, changing its orbit from circular to elliptical. The new orbit has a perigee at P (6.700 × 10⁶ m from Earth's center) and an apogee approximately 180° opposite P (at about 7.308 × 10⁶ m from Earth's center), with semi-major axis approximately 7.004 × 10⁶ m and eccentricity approximately 0.043. Point Q, at 6.850 × 10⁶ m from Earth's center, lies along the elliptical trajectory between the perigee and apogee, at a true anomaly of approximately 62° from P. After passing through Q, the satellite will continue along this elliptical path. Its radial distance from Earth will keep increasing (with positive radial velocity) until it reaches the apogee. At the apogee, the radial velocity becomes zero, and the satellite will then begin moving back toward Earth (with negative radial velocity), passing through a point symmetric to Q on the other side, returning to the perigee at P, and repeating the elliptical orbit indefinitely (assuming no further perturbations or drag).

 

[coolcat6778]

Okay, here's a reputable person weighing in on the physics syllabus

 

[C2H6O]

what in the 20-mark-persuasive-no-reflection ahh

 

[v.tex]

what in the 20-mark-persuasive-no-reflection ahh

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Bro please not have this shit in the exam on friday..

 

[BionicMango]

Tbh I don’t mind there being so much of this humanities stuff in the syllabus, there should just be a lot less questions actually asking about the historical experiments. If they can somehow redesign those questions to be something more along the lines of, for example, designing experiments to test a hypothesis, skills students can develop through depth studies and learning about famous experiments, then that would be a much better indicator of skill and (I assume) more along the lines of uni physics. And more math of course.

 

[v.tex]

2022 was ez, allignment was so shit tho

 

[BionicMango]

what in the 20-mark-persuasive-no-reflection ahh

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Meanwhile North Sydney Boys:

 

[C2H6O]

Bro please not have this shit in the exam on friday..

i dont even know where to begin, ive been staring at this for way too long and im in the middle of exam condition practise rn
this one is literally so broad i could probably talk about any random experiments we've learned and it would fit the prompt (which is not good cause harder to hit the criteria right)

 

[BionicMango]

i dont even know where to begin, ive been staring at this for way too long and im in the middle of exam condition practise rn
this one is literally so broad i could probably talk about any random experiments we've learned and it would fit the prompt (which is not good cause harder to hit the criteria right)

I would structure this chronologically, and talk about maybe three experiments/phenomena? So:
1. Diffraction and Interference (provided evidence for light being a wave) vs. Photoelectric effect (provided evidence for light being quantised)
2. Geiger-Marsden & Chadwick’s experiments (observations subverted the models of atoms at the time, suggesting that there was a concentrated charged nucleus with both protons and neutrons)
3. Particle accelerators and ongoing experiments (standard model of matter and the idea that our knowledge of the universe is unfinished)

And then include at least one sentence at the start saying that the statement is/isn’t correct! Because it’s a “justify” question.

Just remember you can use tables or subheadings and even dot points if it makes more sense that way. They shan’t mark you down for not putting it in the essay format.

 

[coolcat6778]

what in the 20-mark-persuasive-no-reflection ahh

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atleast this was the only experiment regurgitation question. 2024 had like 18 marks of this lol, in addition to boring qualitative questions.

Since it's only 9 marks, I would've only lost 4 marks from humanities questions.