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  1. Arrowshaft

    Physics Exam 2019 Questions Thread

    Proton proton chain fuses 4 hydrogen to produce the net products after a series of transmutations of a helium nuclei, 2 electron neutrinos 2 positrons and 2 gamma rays iirc. The proton proton chain uses the principle of nuclear fusion and mass defect to produce energy which fuels the Star. The...
  2. Arrowshaft

    Physics Exam 2019 Questions Thread

    @akkjen how about you ask a question now
  3. Arrowshaft

    Physics Exam 2019 Questions Thread

    Haha, dw I’m sure as long as you know the basic outline of them you’re all good to go. I’m just really into this stuff so I know a lot about it. They also most likely won’t ask this question as a 9 marker since they’ve already asked it in the sample q’s
  4. Arrowshaft

    Physics Exam 2019 Questions Thread

    Hmm, since it says explain I would’ve thought that they wouldn’t really care about comparisons, just features and characteristics of the technology used, that’s what I also get from their sample response. But you may be right
  5. Arrowshaft

    Physics Exam 2019 Questions Thread

    Yeah, I’d also describe the job of linear accelerators such as the ones in SLAC, the discontinuation of cyclotrons and the favoration of synchrotrons. Also, the role of multi component detectors and calorimeters in determining the particles that are released. Otherwise, seems like a solid response!
  6. Arrowshaft

    Physics Exam 2019 Questions Thread

    Yep
  7. Arrowshaft

    Physics Exam 2019 Questions Thread

    So here's my question, you can take respond in bits or with points if you want. Explain the role of technology in developing both the Standard Model of matter and our understanding in ONE other area of physics. Also, yes I know this is from the sample questions, BUT they didn't provide a full...
  8. Arrowshaft

    Physics Exam 2019 Questions Thread

    Hey actually, do you mind if I go again at asking the question? I have a juicy one that’s why, unless you guys wanna ask
  9. Arrowshaft

    Physics Exam 2019 Questions Thread

    It'd be good if you did
  10. Arrowshaft

    Physics Exam 2019 Questions Thread

    True, was being too informal
  11. Arrowshaft

    Physics Exam 2019 Questions Thread

    Someone else's turn to ask a question now! This is fun
  12. Arrowshaft

    Physics Exam 2019 Questions Thread

    Basically, the residual energy from the singularity that didn't form into matter was in the form of high energy gamma rays (that impeded the universe in the Dark Ages, 380 000-2 million years iirc). As the universe underwent inflation and after that expansion, due to the Doppler effect, the high...
  13. Arrowshaft

    Physics Predictions/Thoughts

    You guys should join the physics question thread! it'll be good revision, we can contribute to each other's understandings
  14. Arrowshaft

    Physics Predictions/Thoughts

    Depends what they're asking. If they ask for time or distance, just choose one
  15. Arrowshaft

    Physics Predictions/Thoughts

    But I guess you’re right in the sense you can explain the 'speeding up' as gaining and losing K and U respectively, so you’re right
  16. Arrowshaft

    Physics Predictions/Thoughts

    Really just an empirical observation
  17. Arrowshaft

    Physics Predictions/Thoughts

    Not really, that law is based off Kepler's observations on the solar equinoxes of the Earth iirc, he reasoned that since at different paths along the elliptical orbit the rotating object possess varying angular and linear velocities, its areal velocity must be the same across equal time periods.
  18. Arrowshaft

    Physics Predictions/Thoughts

    Yeah i know, hence why i said "most". But yeah, i would make evaluating statements for each and compare them 👍
  19. Arrowshaft

    Physics Predictions/Thoughts

    Its because as a satellite or planet moves closer to the object being orbited, it gains kinetic energy as it 'falls', which by the law of conservation of energy means that it loses gravitational potential energy, since the total energy must be constant
  20. Arrowshaft

    Physics Predictions/Thoughts

    Just seems like a mostly derivation based q to me
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