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  1. jeniii

    1st year comm books (1st + 2nd sem) - with photo links

    selling ACCT1501/ACCT1511 Financial Accting 3E+ Supplement 2E = $45 Hi guys. Ive sold pretty much everything except the Management Accounting Supplement 2E. Im selling it for 8 dollars. Its contacted and in excellent condition with highlighting. It is used mainly for ACCT1511. Also still have...
  2. jeniii

    meissner effect ... lenzs law? eddy currents?

    different books have conflicting information!! how can it be lenzs law if the magnet is stationary above the superconductor? and eddy currents =/ woodnt that heat it up -.-
  3. jeniii

    twins paradox makes no sense .. to me T_T

    haha love the explanation! special relativity only works with inertia. you were inert, you got to see me slow down my age. i wasnt inert, you aged normally. so in other words only the acclerating spaceship will experience a slowed time and the earth doesnt? and the spaceship only sees...
  4. jeniii

    depletion zone

    " the depletion zone exerts a force that resists the movement of any more electrons into the region " if no more electrons can go in .. then how is it that "the conventional electric current flow is confined to one direction only" if it cant get into the depletion zone!? and can...
  5. jeniii

    AC Motors

    oh i get it! =] thanks
  6. jeniii

    AC Motors

    so it acts as an untangle-er? if we just connected the ends of the coils to the power supply it will get tangled ... so thats why a circle ring is needed? and if its AC, why doesnt the coil turn backwards and forwards
  7. jeniii

    AC Motors

    argh! can someone explain to me how the slip rings work? i dont get why they are there if the brushes are constantly touching the rings... or so it seems to in the diagrams what happens if we remove them?
  8. jeniii

    twins paradox makes no sense .. to me T_T

    if both the spaceship and observer on earth see each other age slower ... how come the spaceship person comes back to earth definitely younger? jacaranda says "the answer is that this particular problem is not reversible. spaceship has not remained inertial, it has accelerated and...
  9. jeniii

    fixed exchange rate system

    in a fixed exchange rate system RBA sets the rate right ...but is it possible for other any other forces other than gov/RBA to cause value to dep/appreciate? brazil had a fixed exchange rate but "in 1982 .... debt reached XXX and unable to service its foreign debt, Brazil's currency...
  10. jeniii

    Balance of Payments

    thats the point where im stuck... can someone explain the whole floating exchange rate.. equilibirum .. supply of A$ = demand for A$ works? "in theory the floating Australian dollar plays the key role of ensuring that there is a balance in the BOP." .... but HOW? o_O im also confused...
  11. jeniii

    building a motor

    haha that was a stoopid question now that i think of it. ^^""" anyways thanks for all help ~ i got full marks baby =D after burning myself 2 times.. and watching my motor smoke and alligator clips melt ... i shood sell my motor or something hehe spent 40 dollars on this =[
  12. jeniii

    building a motor

    ahh quick question! please sumone answer before tuesday!! i read in phys book if u connect resistors in parallel the current increases!!! like.. dus that mean increases as in .. more current than there already is in the power source?????
  13. jeniii

    building a motor

    @sam =O whered u get soft iron core from. no shop (jaycar/dicksmith/mitre10/bunnings) has a clue. and apprenty ms J said theres absolutly NO way they will change the criteria to permament magnets. @ alcalder: an electromagnet strong enough to turn a dodgy home made coil of wire on a bamboo...
  14. jeniii

    building a motor

    im trying to build a DC motor with a 4 phase split ring commutator but i dont know how to wind the wire around my ammuture coil or how to connect the ends of the coil to the split ring face. since there are 4 faces i have to cut my wire into 2 rite? or can you just tell me how to make a 2...
  15. jeniii

    australia's balance of payments

    ooo can i ask a question on the same topic.. its actually pretty stoopid but just wanned to make sure.. ok so a deficit on current account = surplus on the capital and financial account riiiight .. (plus errors and ommissions) but if we had a surplus in the current account does that make the...
  16. jeniii

    making a superrr strong electromagnet

    could i get any tips to make the strongest electromagnec possible with ... < 4 m of wire.. (remainder to make a coil) unlimited 9v batteries a 10cm steel rod its for a DC motor ... so should i make 2 electromagnets? (North and south) or just one .. and hope its strong enough. but 4m isnt...
  17. jeniii

    DC motor assessment

    kaskai's site cannot by found =[ can u tell me what u used for the commutator? and the iron/electromagent .. did u use like a big piece of iron surrounding the motor and wrapped that in wire?? OR did u make 2 electromagnets (north and south) and placed one on either side? wats the brush...
  18. jeniii

    building a motor

    ahk. thats not too bad then. i tried making one today with wires from broken earphones, bobby pins and paperclips. dint work. =/ um .. bursting with more questions after reading text book >< we have to use electromagnets rite. so dus that mean another separate coil thing? like theres...
  19. jeniii

    building a motor

    RivietIt's a DC motor right? There are many things that can go wrong in a motor, it took me quite a long time to get mine working. how long dus it take?? =/ our assesment for next year.. make motor from scratch under exam conditions within 2 hours T__T gotta get own equipment .. can...
  20. jeniii

    HELP, help help!! need translation

    lol wat!? .. translate.. do u mean into chinese???? AHAHA funfun. lets see wat chinese skool did to me We are one, but we are many wo men shi yi ge, ke shi wo men shi hen duo 我們是一個, 可是我們是很多 And from all the lands on earth we come ye zai hen duo de di fang wo men come 也在很多地方我們 come We...
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