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  1. K

    Trial Q

    How do we do questions like this?? How do we know what emr is produced by electrical circuits?
  2. K

    Trial Q

    In this question, how did they even get that highlighted identity??? Im so confused
  3. K

    Proofs Trial Q

    Can someone please explain why the answer to this question is D, and none of the others?
  4. K

    Physics HSC 2021

    Can someone please explain this question. I get that eddy current form on both sides. But how do we determine their direction and the resultant force on the magnet??
  5. K

    Integration Q Howard

    Oh damn, would you be able to show me a correct way??
  7. K

    Integration Q Howard

    Hmm yeah that would be great! I get what you explained. Now i dont' really understand the last four lines of working out in that q
  8. K

    Integration Q Howard

    In this question, how did they get from that line to the next. This is for part (iii)
  9. K

    HSC 2014 Q

    Can someone explain why the answer to this question is D, please? I don't think i fully understand this concept
  10. K

    Howard Vectors Q

    Can someone please explain this question to me. I don't understand line two of the solution, in particular.
  11. K

    2010 HSC Q

    For this question. I don't understand how they used (ii) to solve. Is there a certain property they used?? How do we do this question
  13. K

    Past HSC Q

    Ohhh, thank you very much, that makes sense
  14. K

    Past HSC Q

    How did you get K = 5?
  15. K

    Past HSC Q

    How would i do this q? Why is the answer 20m?
  16. K

    HSC 2009 Q

    Ohhhh ok thank you, so base year should always be assumed as 100?
  17. K

    HSC 2009 Q

    How would you do this question? (a). The answer is food
  19. K

    Neap Q

    Can someone please explain the solution. How did they get those values for arg and re of w and w^2. Also why did they group w and w^5, and w^2 and w^4, and so on...
  20. K

    Complex Q

    What do you mean there must be a positive number ?
  21. K

    Complex Q

    Can someone explain this q to me plz??
  22. K

    Complex Q

    How is the answer to this q A?
  23. K

    Mechanics Q

    For this q, in the last part: How did they get this value??? I put it into my calculator and I didn't get that
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