Recent content by xxxzxc

wrong button sorry *was clicking randomly*

third angle proof: cos aed is isosceles the apex (angle aeg) is 180-2a angle cab is 180-2a (supplementary angles) angle abg = angle aeg (angles subtended by same arc are equal) hence, triangle ACB is congruent to AGB (AAS) the trick is finding the other angle cos they dont give you hints for any...

basically the fundamental particles (a brief explanation would be nice) and the extent that we need to know this (the theory seems to go on forever..) and do some particles overlap or are they the same (e.g. under the group fermions - are leptons and quarks and yet hadrons are made up of baryons...

i dont think the school cert was entirely useless after all it's an external examination right? it would at least mentally prepare us for the HSC regardless of its level of difficulty

yes make x = 0 because it is where you start as you are dropping it from that height

there seems to be some discrepancies with how much energy is produced by the haber process some textbooks state that 92kJ/mol of energy is produced others say there is only 92kJ of energy websites give a whole lot of other values (e.g. 46kJ/mol, 46kJ, found one that said 184kJ/mol)...

first find the equation of the normal, then substitute (0, ka), make t the subject and there should be 2 solutions for the sqrt(k-2). for the next part, simply substitute k=3 then use your previous 2 solutions (from the first part) to find the 2 t-values. substitute this to the coordinates (2at...