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but it will never be a true parabola unless its in a perfect vaccum and under the effects of only one gravitational field :P which is techinically impossible lol air resistance will see to it that it will never be parabolic

lol? projectile prac? omg i didnt even get one i suggested bottle rockets over the back oval ... rejected straight away

lol nice advice anyway you should take up 4u maths and then drop it if you find you cant handle it if your doing your 2u assessments as well then there should be no problems physics should make motion a breeze so thats one topic out of the way :P

Re: Year 11 Preliminaries Textbook Choices your not serious right? i personally i think you should scratch excel physics from your list hsc or prelim there are mistakes and misleading information scattered throughout jacaranda is a great physics book and so is physics in context although i...

^ you can still change your subjects in the first couple of weeks

^ is it me or does belonging sound really dodgy lol anyway ... 1 hour of study should come attached to 2 hours of play to let the info sink in

year 11s dont really require textbooks other than those provided by the school other than in maths since the course often overlaps into both years

lol forbidden how long did that take you to write up?

they get tc 99 from molybenum <--- not sure about the spelling

eerr distribution? as far as i know petroleum is refined from crude oil and then distributed as leaded/unleaded petrol whereas fuel made from ethanol is more commonly seen in the form of lpg other than that i dont think i can help you

one other type of cell could be a lead acid cell battery as seen in cars or a lithium battery you can find notes on these posted in the resources section of the site

basic naming priorities you start counting from the side which is closest to 1. a double/triple bond 2. a chain branch 3. hydroxyl group 4. anything else (ie halogens) when writing it out its in aphabetical order ending ie. bromo comes before chloro even though it may be further from where you...

that and the flourine that they stick in tap water these days is good for your teeth

dont memorise but know of them in 7 mark questions its rarely just the one dot point its refering to you need to look at the topic as a whole and say 'oh ye i can see how they can link these 4 dot points together to make a 7 mark question' so studying and making notes for every single dot...

*sigh* your in year 9 right? you have different types of energy ... electrical kinetic chemical potential elastic thermal acoustic light etc although you'll later realise that some of them are the same .... but not at your stage of learning so i'll try to reduce it to your level .... light bulb...

its a double thread because i just posted in the other one ..

how about the formula F = ilxBsin(theta)

lol man ... havent been here since hsc.. since noone is answering your questions i'll do it the first link question 3 you are given a formula somewhere along the line its telling you to get it into the form y=kx which is the formula of a straight line passing through the origin it then tells...

thats what i did =) also talked about nicklesons equation

keplers law solves this also alex is right although they are doped they are electrically neutral unless they meet with a ptype semiconductor and ptype = positive = holes = group 3 = boron