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  1. J

    General Thoughts - English Paper 1 2007

    text 3 was a faggot. i finished all the booklets. marks? well quantity is never a measure of quality... so i have no idea. but i am glad its over.
  2. J

    Experiment of KMnO4

    hey thanks a bunch i really appreciate it
  3. J

    Experiment of KMnO4

    Wouldn't by any chance know what solutions id use?
  4. J

    Experiment of KMnO4

    Hey guys, my class did not do the experiment with KMnO4 if anyone could please enlighten me on the steps taken and then mention the results with colour changes id be greatly appreciative! thanks in advance i guess :D
  5. J

    Trial HSC Question

    oh yeh i dont think id go into it, but maybe mentioning (like that sentence only)? or??
  6. J

    Amphoteric and Amphiprotic

    Umm i agree with brenton, any could be used but please dont forget the bottom two are said to "go to completion" whilst the above two are in equilibrium. (according to conq chem)
  7. J

    Ozone layer and Antarctica?

    Nooooo multiple choice is fun! as if youd want to get rid of 20 marks, or is it 15.... -.- worth of questions which "just by chance" you could get 5, just think what a little study could get you!
  8. J

    gaseous forms of oxygen & the oxygen free radical

    haha yeh i think i avoided the oxygen radical bit. But i think the essential factor with oxygen radical is that its 20 times more gay than the other two
  9. J

    Black body Radiation and the Ultraviolet Catastrophy

    Glad i could help in some menial way :D
  10. J

    VERY GOOD CHEMISTRY QUESTION!!!!! please help

    ^^ thanks. Does that mean it can be used to define a dehydrating substance H2SO4?
  11. J

    Penetrating Power

    Sorry i think this is incorrect. Because as far as I've heard neutrons are a better probe than x-rays and x-rays have no charge/ no mass. But neutrons are more penetrative than they are? Gamma rays, and x-rays, and all EMR, can be stopped. If you have a closed box and put a torch inside and...
  12. J

    NOTES on Standard Model - Quarks, Leptons etc

    Hey i really like your analogy, it makes so much sense now! Im unsure about the colour bit, do you mean that the lego pieces have to have different colour-charge (if their next to eachother) because they obey the paul exclusion principle? And i thought i should mention the Standard Model does...
  13. J

    Pracs

    Hey mate um theres only two and one of them is not compulsory (as a prac but secondary source investigation) so the first one is Basically Equipment involved include: hydrogen lamp, and diffraction grating (its like a piece of glass which you look through). Umm well its simple, you look...
  14. J

    Cloud Chamber Set up?

    For the less fortunate, like me, we didnt actually get to do the experiment so i dont think you'd extreme details, especially because the dot point asks So i dont think the set up is essential. But maybe understanding whats actually happening (supersaturated alcohol causes the ionised trail to...
  15. J

    Heisenberg and Pauli

    shit are u sure? I thought it was Pauli's exclusion principle who said that electrons cant exist in the same quantum state (i.e. in nucleus) and that it was Rutherford who in 1920 suggested the existence of a neutron, because the mass of the nucleus was found to twice that of the atomic number...
  16. J

    Westinghouse And Edison

    Hey little master i reckon that was a really good answer. But um i think by 1896 AC had already started winning 1891- Germany did an AC test 160km and it was 77% efficient. and also 1893- Chicago World Fair- Edison offered to power it for 1000000 bucks, but when Westinhouse offered it for half...
  17. J

    Transistor in 1928

    Lol this is a year old.... Ok revision for me and anyone who reads this i guess.. Well imo there would be a few words which are essential to the answer and one of them is integrated circuits which basically saw the beginnings of computers so yeh id give my marks like this 1- state why it took...
  18. J

    maglev trains!

    Could anyone please explain this in more detail I understand that the maglev train doesnt use the meissner effect. And i also understand that there are two type of maglev trains EMS, electromagnetic suspension, which uses attractive pulling forces, and electromagnets to allow the train to...
  19. J

    Einstien And The Photoelctric Effect ???

    Umm infernal I think this is incorrect. Einstein more specifically proved the particle nature of light. Combined with evidence for its nature as a wave, it can be said that Einstein contributed to the idea of "wave particle duality" for light. This does not include the wave particle duality...
  20. J

    Jacaranda Physics HSC

    Jacaranda has really got to be one the best. I like Macmillan too- but its a bit outside the syllabus. Personally i use physics excel, it was the cheapest at the time. But most of the stuff im not sure about, hyperphysics.com or waterver is damn good
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