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Re: HSC Physics Marathon 2014 I think so, you need the correct SI units. Not converting and substituting into formula's will give you a wrong answer. (an exception would be the special relativity questions, as long as you keep your units constant ofc)

What sport do you play?

Re: HSC Physics Marathon 2014 lolwat. Tank? I wish lol. Post a troll projectile motion question and I'll be sitting there for 20 minutes getting nowhere. The first question you posted was so much more challenging than the others, I'll probably attempt the question when I have time :P

Re: HSC Physics Marathon 2014 Oh hey I never really took notice of that although I do remember deriving orbital velocity through Fc=Fg :P awwww haven't started and I don't plan to learn ahead for M and G yet :/

Get off your throne and look for him.

Re: HSC Physics Marathon 2014 So 30 degrees from the horizontal? We are missing the velocity component required for centripetal force so we gotta find that out. Subbing it into the orbital velocity formula gives me 29821.7 Subbing into the centripetal force formula gives me an answer of...

Re: HSC Physics Marathon 2014 I got 47.57 ms^-1 is that correct?

a) light year is a measure of distance/length, not time. So you might want to drill that idea in your head before you make careless mistakes. time= distance/speed which is 4.5/0.1 which is what the answer says: 45 years b) isn't that the same as d? idk LOL c) cbf but find the distance of a...

a. not sure what it means by defect.... maybe the difference in the mass between lhs and rhs? b. use e=mc^2 for the rhs

Could I get some insight from people who didn't do what their class did? This doesn't have to be for physics, it can be for any science/humanities

I don't plan to pursue a science course but who knows? :P Going to try and figure out the one I'll do the best at. Ehhhh then I guess that isn't that bad. But is the difficulty like projectile motion questions? Sure everyone is like "it's year 9-10 maths, its just substitution,some trig and...

Re: HSC Physics Marathon 2014

Thanks for all the replies guys :)

Dat triple science. Good luck.

lol woops. edited.

e=mc^2 energy=mass X speed of light^2 energy = 6.02x10^23 X mass of proton X (3 X 10^8)^2

I did nothing during my junior years so yea :P I think my resources might be a factor here, I'm very note dependent (I learn by making my own notes using other people's notes+textbook). Atm I don't have many decent sets of astro notes. So the winner is the one who can memorise the best? My...

Out of curiosity, if they found a mistake that GAVE you a mark, would you lose the mark and possibly accept a lower atar?

Use e=mc^2 mass of proton is on data sheet.

Well even though it's probably really early thinking about them, I prefer thinking about it now during the holidays rather than during school where I'll be busy. The two that I'm thinking about is astro and q2q. 1. Which one is easier? 2. Which one has more equations? (and are they...