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  1. P

    Derivation for escape velocity

    If u think about it logically, kinetic energy is equal to or more than the gravitational force, which is required to escape the gravitational force of the planet ( definition of escape velocity (makes sense)
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    Mx1

    Im accelerating maths and jst turned yr 12. Should i focus purely on maths this week for the hsc or also be doing my other yr 12 non accelerated subjects? I wanna state rank im ranked 1st at knox is it a waste of time to be studying yr 12 stuff when i have hsc ina weeek from now? EDIT any ts on...
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    Physics dot pt notes

    Which are the best notes out there online? Would u say andrew harveys or "students guide to hsc success" are better? I want to jst stick to one.
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    Binomial help

    Hsc 2013 mathematics extention 1 question 14b (iii) These r the solutions(partial) . I dont get it from here some1 explain / diffferent method plz
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    Cssa 2015

    Can someone plz message me them? Mx1 Also independent
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    Terry lee challenge problems

    Would doing these help in attaining the skills to do well in hard questions in the 3u test? (Like q14), or are they too hard?
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    2015 HSC Extention I Mathematics Predictions

    In my opinion there will be a hard projectile and medium binomial expansion for Q 14
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    2015 HSC Extention I Mathematics Predictions

    So, what do you guys think? Will it be as easy as last years? What topics will compromise of the last section? Projectile? Rates of change? 3d trig?
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    Nsyllabus dot point notes

    What do you guys would reccommend to be the best notes? The ahmed guy i find is good but which one is the better one the 2013 or the 2012 one?bare there better ones? Andrew harvey for CHEM doesnt go into detail much but for physics its good Also physics
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    State rank question

    Im 1st externally for mathematics extention 1. If i score 70/70 in externals, am i guaranteed a state rank.? Also, how do internal ranks work if im first? I get the best internal mark from our school right? So basically the difference between me and 2nd internally in the school assessments...
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    Hsc mx1

    Whats the best way to prepare for the 3u hsc in a month from now... I consistently only get a few wrong per exam... So what yall think? Ive done every past paper there is (except the old 84 mark ones). Will doing old past papers actually help? Like etc 1995 james ruse paper stuff like that...
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    Mx2 and mx1

    Does studying mx2 make mx1 easier in that it increasees ur mathematical skills? Like im fine in 3u the only problems in the exam are the last few hard ones so will doing more 4u help with this problem even a single bit
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    Drsoccerball's 2 Unit Guide

    Yo with the extrabooklets do we still hand them in. What if we wrote like 5 different solutions and finally get it, dou circle it or stho
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    3d trig help

    Cheers bro! Iget it now
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    3d trig help

    Hey guys u know mx1 2005 hsc question 7a g0(soz picture too big to upload), the answer says to find PT (which turns out to be 2050m) and use triangle PTA (say 'A' is the top corner of circle) and it says here that it is a right angle triangle, how can we assume? And also how can we assume pt...
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    Easy acceleration of a rocket question help plz

    A rocket and its fuel have a mass of 2.5 x 10^6kg as the engines ifnite for take off. The engines deliver a constant thrust of 5 x 10^7 N. Given that 75% of the rocket is fuel, calculate the final acceleration of the rocket.
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    Quick complex numbers problem

    Help with part (iv) pls. Btw is this under the topic complex numbers or polynomials?
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    3unit quick two questions

    Help Edit: 1 question
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    curve sketching help

    got it, thanks. oh but what do u mean by "critical pt"?
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