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Re: MX1 Calculus Marathon 2016 haha I think you forgot to read the exponential sign lol, he meant, y=7^{ln(x)}

oh, thanks for that info haha

ohh okay I get it now, thanks man!

haha legit took me an hour to type it up

So I'm pretty confused as in how to approach this question: A car of mass 450 kg travelling North at 50.0 km/h changes direction and is travelling at 50.0 km/h due east 20.0 s later, while travelling around a corner. a) Find the change in velocity My answer for this: $since change in...

As with me, I find the wording of questions difficult to understand, maybe that's cause I haven't practice enough questions haha.

Isn't c4h6 butyne (regarding previous page)? I mean, it has the same formula, c4h6 right? I'm sure it's in the prelim course, naming alkanes, alkenes and alkynes

Yeah its valency is always 1+ . Since it's only 1+, you don't have to indicate it in roman numerals. So you can just write it as silver nitrate edit: After a google search, seems like it has (+2) and (+3). But since +2 is so rare it is assumed as just +1.

yeah man I was actually thinking that we would get a globe and just need to write whether its conductive or not. But when we got the notification, it had no globe, but just an ammeter. So I think we gotta measure and calculate and stuff, or just write out the ampere reading. so confusing

Our teacher just told us to 'measure the conductivity' and gave us literally no information on what to do and told us to research every bits by ourselves, that's why this is so confusing. So yeah, ill talk to her and hopefully get this thing figured out. Thanks for your help :)

it's the second dot point in the chemical earth prelim chem. 'plan and perform an investigation to examine some physical properties, including malleability, hardness and electrical conductivity, and some uses of a range of common elements to present information about the classification of...

haha yeah thanks for that man. My teacher already gave me like dozens of rules when drawing up tables and circuits haha

ohh, thanks InteGrand. Didn't even know that there was a difference between conductivity and conductance till now haha. Also, if you don't mind, do you think that ill get marks if I write up conductance and did current/voltage (instead of conductivity) in the table. Cause i don't think ill have...

So I'm gonna have a prac assessment on testing the electrical conductivity of some substances (second dot point on chemical earth). So I have a few questions and I'm terrible on electrical stuff, would really appreciate if anyone could help me out. 1. Does it matter where I place my ammeter...

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread D is y=1/(5x+2)

Hehe yeah Rathin, he isnt that great at teaching bio ;) Oh and OP, as for note taking; I suggest you go ahead of class, especially since you 'feel lost' when the teachers teach new topics, and you since you also prefer to work alone. Especially for sciences, By using a couple of textbooks...

Ah okay, thanks for the clarification guys

So just a small question here, basically, are we allowed to use, and/or get marks for questions if we use calculus in the moving about graphs topic? for example, imagine they give you a displacement/time graph of a car, and it has a perfect parabolic path (or the question also gave you an...

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread you got the correct angle, 34.6 degrees, but you don't subtract it from 360. If you look closely you actually do 34.6 + 180 + 90 = 305 (to the nearest degree) http://imgur.com/oM1L49p

Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread http://i67.tinypic.com/2wntk0n.jpg Soz its sideways, 16h. Basically you find the the gradient of the line l which is 12, then use the point gradient forumla to find the equation (sub in the origin points). Since B is directly...