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  1. jeffwu95

    $15/HR tutoring for 2u/3u/chem/eco 99.55 Atar

    *First lesson Free* Hey guys,I posted a few weeks ago but didnt receive many students so im offering $15/HR So pretty much from last time,I am offering tutoring for Yr7-10 (Math/Science) and Yr 11-12 (Math(2U,3U)/Chemistry/Economics) at Chester Hill Library/ Bankstown Library/ Cabramatta...
  2. jeffwu95

    $20/HR tutoring from 99.55 Atar student (first lesson free) for Yr7-12

    UPDATE NOW $15/HR tutoring from 99.55 Atar student (first lesson free) for Yr7-12 Hey guys,I am Jeffrey Wu from Georges River Grammar, I am offering tutoring for Yr7-10 (Math/Science) and Yr 11-12 (Math(2U,3U)/Chemistry/Economics) at Chester Hill Library/ Bankstown Library/ Cabramatta...
  3. jeffwu95

    Help with magnetic fields (HSC)

    I drew the magnetic fields around the wires and determined it to be B but the answers says A
  4. jeffwu95

    Copper Tube/ Eddy Current Question

    If a magnet passes through the copper tube at a uniform rate would eddy currents still be formed because when a magnet falls through a copper tube normally, it accelerates so i was wondering does there have to be an acceleration or not? :) edit: follow up question: if u put slits the the copper...
  5. jeffwu95

    Question on lenz law-HSC

    This is MC 2010 paper the answer says it is D but wouldnt it be C because as an increasing current flows from the outer ring, this would cause a magnetic field into the page between the rings, by lenz law wouldnt a magnetic field have to be induced upwards from the inner ring and thus using the...
  6. jeffwu95

    question on magnetic fields (current carrying wires) -HSC

    I dont understand/ cant visualise how magnetic fields interact and create forces with current carrying conductors ie: An electron is moving near a long straight wire. When a current is applied to the wire the electron experiences a force in the same direction as the current flow in the wire...
  7. jeffwu95

    Help with Creative

    I really need tips on creative writing haha, i have gotten 10/15 for trials and half yrlies for creative writing :S The comment on mine was that my imagery was not great and it seemed two dimensional I just cant seem to improve my imagery :S help appreciated :)
  8. jeffwu95

    Perms and combs question

    In how many ways can 5 men and 5 women be arranged in a circle so that the men are separated? In how many ways can this be done if two particular women must not be next to a particular man? I need help with the second part :)
  9. jeffwu95

    MX1 help! Rates of change

    Sorry for shitty MS paint
  10. jeffwu95

    CSSA Economics 2012

    So howd you guys find the economics cssa, I trials found it ok, but the short answers were pretty hard
  11. jeffwu95

    conics question

    The tangent at P (acostheta, bsintheta) to the ellipse (x2/a2 +y2/b2=1) cuts the y axis at Q. The normal at P is parallel to the line joining Q to the focus s' . If S is the other focus, show that PS is parallel to the y axis. Thanks in advance
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