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  1. G

    Exam Thoughts

    i think in the 8 marker you had to say that while their expermental proceedure was valid, it was unethical because he swallowed the bacteria himself. Goldfish they wanted you to talk about how both genetic and environmental factors can affect the goldfish. Like, one gets less food so its...
  2. G

    Does anyone know an experiment to measure the value for gravity's acceleration???

    ok, you swing a pendulum through less than 10 degrees and then use the formula: g = (4pi^2)/T ta da!
  3. G

    phase scan

    ok, what is a phase scan jacaranda says its where you have transducer heads out of phase with each other BUT Macquarie say that its where you measure the phase of the waves to give you extra information? Whats the dealio yo? GMC
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    T1 and T2 weighted (MRI)?

    Ok, it works like this: T1 - The nuclei give give away energy to the lattice around them, so hydrogen compounds relax fastest, with free water being later (i think). T1 relaxation is quite fast compared to T2, so in order to weight an image towards T1, the pulses are sent in really fast, so...
  5. G

    galvanising -help

    so do they diffuse over the iron to cover the scratch?
  6. G

    galvanising -help

    ok, i basically get galvanising and how it makes the iron the cathode and stuff, but how does the zinc close the gap over the exposed iron? Otherwise youd be losing expensive zinc for cheap iron? George
  7. G

    HSC 2003 Q31 e)

    the criteria is included with the comments from the marking centre on the board of studies. George
  8. G

    Kidney - Proximal Tubule

    Hey, does the proximal tubule rebabsorb stuff? Because most of the stuff that i find around the internet says it does, but the anwsers in the sucess one biology say that it doesnt. Thanks.
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