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Isn't that the theorem, If two chords intersect inside a circle then the product of the lengths of the segments of one chord equals the product of the lengths of the segments of the other chord. So if two chords AB and CD meet at X AX*BX=CX*DX And this also works if they intersect externally...

I was under the impression that size meant value rather than percentage. Say the chocolate is 100 1st bite took out 10 of that 100 2nd bite takes out 10 again but now out of the 90

It would be travelling west but if they ask you what it's called you'd write easterly. You name a wind as Deer said by which direction it's coming from. Write both to be sure i guess

Wiki: Scientific laws are similar to scientific theories in that they are principles that can be used to predict the behavior of the natural world. Both scientific laws and scientific theories are typically well-supported by observations and/or experimental evidence. Usually scientific laws...

Corrosion: 4Fe(s) + 3O2(g) → 2Fe2O3(s) Iron+Oxygen-->Iron Oxide Corrosion, but corroding iron is commonly known as rusting Acids on metals: acid + metal --> salt+hydrogen eg. Hydrochloric Acid HCl + Zinc metal Zn --> Salt Zinc Chloride ZnCl + Hydrogen Gas Acids on carbonates, anything ending...

Thx And good luck to everyone else. Now there's one thing left to do: Don't be late!! Set your alarm and give yourself plenty of time

Aren't crucibles made for high temperatures? So I guess that would be a good enough reason and if you directly heat a beaker it cracks? Hope that helps.

I dislike Mc in general, especially in English. It makes it seem like UNSW English Competition. So does HSC have no MC?

It's the reason why you are doing the experiment. The thing you're measuring. What do you need in your method for an experiment to get full marks for say a 6 mark question? eg. control

Is there one in the Science Focus 4 coursebook?

Loved - Maths Hated- English Boring- Geo

Was asked before V=IR Voltage=CurrentxResistance Used when you have two out of three of Voltage Current and Resistance and you are required to find the unknown of the three. Must be in conditions where decomposition doesn't occur wasn't it?

I guess it'd require less wiring and probably less electricity as can be seen with Christmas lights- a lot of them but not pretty dim. Q: Law of Conservation of Matter

James Ruse as well. Loving this forum, really helpful :D

Top right which is Fluorine and bottom left Francium are most reactive. So I guess the closer the element is to them the more reactive the element is

Woops wasn't paying attention

List some methods of chemical separation. eg filtration, etc. Evaporation eg Salt from salt water i think Boiling points? Think it's called distillation or something Q: Newton's First Law.

I guess all schools are basically the same. The only difference with James Ruse is that there's a much more competitive environment which pushes you to work hard. It doesn't matter which school you go to, but how hard you are willing to work. Oh and of course teachers, even Ruse has teachers who...