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Re: why the mass of the planet plays no role in determining a satellite's orbital spe Yeah I had a feeling equating them would make no sense Thanks for reminding me :) (I haven't done calculation questions involving this in a while)

re: HSC Physics Marathon Archive InteGrand being racist wot (lel jks) I think the graph is restricted to when it stops the moment the rock hits the water + InteGrand what's your (HSC level) understanding of the Meissner effect?

Re: why the mass of the planet plays no role in determining a satellite's orbital spe Yeah my bad haha What happens to the negative though?

Re: why the mass of the planet plays no role in determining a satellite's orbital spe Orbital Velocity = GM / r (square root over the whole thing) Its derivation comes from equating the centripetal force formula and the gravitational force equation that includes the mass of the planet and the...

I remember receiving my chem trials and looking through one of my responses about diminishing natural resources I mentioned guano and I subconsciously put "bat shit" in brackets (I honestly don't remember even thinking about it that way and if I did I wouldv'e written bat faeces) - The marker...

You have to take into account Back EMF

:blink2: I had no idea they allocated it in the marking criteria :O (I have the success one book that goes back to the 1980's papers so I haven't checked BOSTES's solutions)

re: HSC Physics Marathon Archive It's also good to mention the exclusion of the magnetic field from the superconductor @indolence I've heard explanations of the Meissner effect with Lenz's Law but for HSC physics I don't think they want you to relate the two For your question I would've...

Yeah the papers are apparently getting easier not just in terms of difficulty but the wording of the question; you'll notice with the earlier papers that the wording of the papers were very ambiguous and it's difficult to pick out what they're looking for - they'd also allocate marks for the...

Mhhm I'm not sure how I'll give back to the community :/ I'll probably upload some notes and buy some raw marks so you can add them to your database :)

This is like the 5th time this week LOL

They often ask it in the MC section

Bump for photastic! The marks he achieved in the HSC are a testament to the skills he possesses. The fact that he he is studying Actuarial Studies also shows how he is passionate about this subject; this will make the tutoring experience more enjoyable for himself and the students :tennisclap:

It's in the form v^2 = n^2 (a^2 - x^2) So Amplitude = 3 Period = 2 pi / 4 = pi / 2

You should also know the formula for gross profit and net profit (They may give you the ratio formulas but not the formulas for these individually) Gross Profit = Sales - COGS COGS = (Opening Stock + Purchases) - Closing Stock Net Profit = Gross Profit - Expenses Working Capital =...

re: HSC Physics Marathon Archive I don't do this option but is it something to do with the dry ice melting to the carbon dioxide gas form and radiation ionising these particles and then there's something about droplets forming a path (beta has a zig zag one iirc) --> tbh I have no idea LOL I...

Just don't spend too much time on MC Try get it finished in 10 minutes

BOSTES will take some time and there aren't many BoSer's keen on writing out solutions to a subject like this They usually do it for maths only

This is reassuring I went along with the same thought process + Check your email :P

Yeah and I just called it changes in the ozone concentration above the Antartic over the past 50 years or something along those lines