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YEAH THATS WHAT I PUT WOOOO I feel this is legit because in between B and C, you can approximate it as a constant field (and moving through a constant field will yield no change in emf) or alternatively, the force is a continuous function it switches from being repulsive to being attractive...

maybe this year's the year of a few nsb 4u state rankers!!!!

how are their internals ie chances of state ranks?

Ok from my nosiness and random asking around, there are a few ppl who reckon they got 99+, like 1-2 each from nsb, baulko, grammar, sbhs

LOL bro in the time you wrote the essay you coulda got your 100 :'(

wait but in the q didn't they just always assume static friction, not moving kinetic friction? so like you didn't need to know there was two types of friction to do it anyway ahh

bro wellllllll we might be getting into definitions here, what i'm saying is that frictional force varies with speed HAHAH you can say that muN is the max friction and that would mean its not a variable LOL P: P:

OH HAHAHA yeah mu is a variable, because it's static friction - the friction only exists as much as needed to keep it from moving. But you didn't need to know that realllly to solve the quesiton.

Re: 2015 permutation X2 marathon SWEET yeah 0.1 is if he lands on the island he's on. Ok, my explaining skills are actually pretty shit, but here goes. I numbered the islands from 0 to 9 and then i made a 10 digit number, where first digit is the island that the teleporter on 0 is directed...

Re: 2015 permutation X2 marathon OK well i got 55% is that right hahaha (assuming that not using a teleporter counts as 'using the teleporters') working: 0.1 + 0.9/(9*10) * (1 + 2 +...+9) basically i counted permutations l0l

Re: 2015 permutation X2 marathon Wait so whats the answer? I reckon its still better to switch

Hi guys, is it worth it to learn all 7 poems for discovery (I'm doing Dobson) I had a look at past exams, and they have never specified poems. The thing is, I have only prepared 2 poems, and if they specify a poem I'm 5/7 of the time going to be screwed. Any thoughts?

There were two NMSS (math summer school so sorta olympiad training squad?) ppl there (that i knew of)

omg is this the one and only timstar? <3

LOL pumped for this (hoping i get in ofc) more pumped for this than the actual hsc l0l

HEY GUYS I'm keen for 3u and 4u (not sure if the pm got through) @carrotsticks

S1: 76 S2: 42 S3:80 basically s1 and 3 were 99-100 percentile and s2 was 20th percentile... overall 98 percentile tho! LOL Ok the comment above me is scaring me bcos of my s2 mark. Anyone have any insights? I'm looking at a 99.8+ atar.

Cool! Sounds great :)

Re: 2015 permutation X2 marathon No he didn't simplify lol

but results aren't out yet lol