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That answer should be worth full marks for the question.

Now, this question is a bit flawed. You need to have a use for cobalt-60 if you are going to justify it. Hence you need to state which use you are talking about. Sterilisation, cancer treatment, etc (if there are more) Now, because it's an "explain" question, you need to have causes and...

Yep, I'm definitely a perfectionist.

1. Do I sit for the UMAT in Year 12? If so, would our Year 12 knowledge be sufficient to complete the test? Yes, the earliest time you can sit the UMAT is in Year 12. There isn't any special knowledge required, but English reading skills, logical thinking skills, empathy, etc (i.e. generic...

The answer is correct. Beta decay is when a neutron decays into a proton (which stays in the nucleus) and an electron (which is emitted out as a beta particle). Hence atomic number increases by one while atomic mass stays the same. Actinium-227 decays into a beta particle and Thorium-227.

Hexane/ene are highly volatile and flammable. Hence the experiment must be conducted in the absence of naked flames/sparks that could ignite fumes. Well ventilated area and fume cupboard must be used to prevent the build-up of flammable fumes. If ignition occurs, immediately wash the affected...

more dangerous than cyclohexene/ane but still usable I'd use cyclohexene/ane in exams though.

Re: cant wait till wednesday Thanks lol well, that's why there's a strong clinical/practical component in all med courses! I don't trust myself with others' lives too - at least for now.

Re: cant wait till wednesday haha yeah, spot on. Many of those who get 99.5+ or so aim for med or law. I am going to do combined advanced science - medicine at Usyd.

No prep needed but if you do still want to prepare, read your school textbook or any resources you have.

Re: cant wait till wednesday lol same here But I am excited rather than nervous.

“Revise HSC in one month” study guides aren't that great according to many people + me. I guess it's personal preference though. I wouldn't usually recommend getting a tutor if one is dedicated enough to spend time looking at textbooks, reading the syllabus, asking school teachers any...

Yeah, you should change your aim in your sig lols

+1 UMAT training isn't that great anyway. It does give you an idea of what to expect and let you be in the speed reading mood lols. For section 3, training is pretty effective though. I recommend using only section 3 practice materials (I don't know how to get this though, except buying...

Actually, kg wt or newtons lol There actually is an acceleration/force that you are applying to the gauge but the gauge exerts equal and opposite force to stop your motion (by Newton's Third law) - no net force (and net zero acceleration). Since the gauge experiences force and pressure that...

oh lol of course I don't know what I was thinking some mins ago lol

Actually, I think 2nd derivative test can conclusively test for the nature of max/min points, but for points of inflexion, we need to test for a change in concavity (as in sign change).

Yeah, you are right. Part 1 only requires explaining and planning while Part 2 requires an actual experiment to be conducted. The report seems pretty good although I don't like "You may shock yourself" - the use of 2nd person lols. And good idea to fix "4. measure the distance (x) of where...

I thought it was hyperbolic (I could be wrong)

lolllll