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Hey Trebla, can you please make a 2nd day of this event? Some of my friends including me cannot attend Saturday. If you can't, approximately what time next year are you doing it?

Seeing as there's no question: Observer A sits in the middle of a train traveling at high speed past a railway station. Observer B stands on the station platform. Lightning strikes the front and back of the train at the moment observer A passes observer B. Analyse the statements of both...

Hello Lien :) Here's a scaffold for the HSC verbs! http://www.hsc.csu.edu.au/pdhpe/resources/2604/scaffolds.htm

Does it appear a lot in exam questions where they ask you to draw out the structural formula of any condensation polymers or do we have to memorise the structural formula of important ones like cellulose, PET or even nylon-6?

Oh oops, how do you do it then since they aren't the answers?? Curious

I gott z= +-1 +-i as an answer. 4 answers total for z, is that correct?

Just remember to stay calm and not raise your voice, you have done nothing wrong. Also be really polite,

I personally think, you shouldn't let this go. Don't let this person do this to you, no person should be treated like this! This amount of money is probably precious to you since it's your own pocket money, are you just going to let it go easily and lose your money? Unless you're rich, then idk...

Yeah, reason I suggest that is because I doubt his mother is part of this scam (if it is one). And his mother instead, would be understanding, and hopefully refund you back herself. Just explain your situation to her!

Regarding his issue. Have you tried speaking to his mother? Because I assume his mother will tell him off big time, and that will make him (reluctantly) give you a full refund??

Oh my god, I'm going to be taught by FizzyCyst and he charges $50. Should I be worried Sien ???

Dammit! My friend was right then. Thanks Drsoccerball!!

Ohhhh!!! Thank you!! I get it now

Could you provide a stronger explanation why you add them? I just don't understand why lmao

Wait, why do you add them? The decelerating force is pushing against the shuttle causing it to decelerate. So shouldn't it be 4500-982N?

Actually the answer is 5382N

Yeah it is! Can you show me how you worked it out?

So a shuttle is decelerating at a rate of 50m/s. Travelling towards the Earth. A dude is 90kg in the shuttle, what is the force of the seat on the dude? Taking into consideration of the deceleration and gravitational force of the guy. Questions very confusing, if anyone wants the answer, just...

Oh no!!! Thank you so much, such a stupid mistake

How would you go about solving part b of this question? (a) If z = cis.(theta), prove that z^n + z^-n = 2cos (n.theta) (b) Hence express (z+z^-1)^4 in the form A.cos(4.theta) + B.cos(2.theta) + C For part B I got up to: (z+z^-1)^4 = (2cos(theta))^4 (From part a) = (16cos(4.theta)) ....