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re: HSC Physics Marathon Archive a)It was previously (possibly between the mid-17th and late 19th Century) thought that energy required a medium for transmission and propagation. Having concluded that light moves as a waveform - physicists inferred from other wave motions to better understand...

Remember: Teacher>Friends And if the teacher happens to be wrong, you can blame them. (Doesn't work out with friends doe)

Remember: Teacher>Friends And if the teacher happens to be wrong, you can blame them. (Doesn't work out with friends doe)

the elementary particle theory :awesome:

Much of what anomalousdecay said is 'correct' but is not specifically taught in the syllabus. A syllabus-based response would be as follows: b) whilst nuclear laboratories facilitate the production of Carbon-11 (a radioisotope produced by Boron and a proton), the short half-life (~20mins) and...

Likely the 6 will be used in the latter part of the question

Ay wassup JoshMosh2!

differentiate f(x) to get f'(x)=2x-7 sub in x=2 in f'(x) to get: f'(2)=2(2)-7=-3 (which is negative)

Yeah GL with doing this. #Hopeyoudontdie

Is this an open event? And could you link the info if so? :D

re: HSC Physics Marathon Archive An observer on Earth watches two spaceships. According to their measurements, spaceship A is travelling away from Earth at 0.5c, and spaceship B is approaching Earth at 0.75 c. How fast is spaceship A moving according to the crew on spaceship B? (2015ers only...

In short tv > to, Lo > Lv, Mv > Mo Perhaps googling the two graphs (v^2/c^2 vs. Length/time/mass) will help you understand what exactly happens. You'll find that for time and mass, the graphs increase. Whilst for length, it decreases.

Re: HSC 2015 4U Marathon Just...LOL When i first did these types of question, I have to say, I was a bit retarded...

re: HSC Physics Marathon Archive Somehow, as i was writing the response, the statement became clear to me. THANKS FIZZY FOR TELLING ME AFTER IVE WRITTEN A LOAD OF IRRELEVANT STUFF :headbang:

re: HSC Physics Marathon Archive One more attempt: Considering that the spacecraft's fuel has completely exhausted, the statement "Newton in the driver's seat" would refer to the 'free return trajectory' a spacecraft experiences due to their inertial velocity as it approaches Earth. Recall...

re: HSC Physics Marathon Archive LOL, i never even understood what the question was in the first place :(

re: HSC Physics Marathon Archive Actually, conservation of momentum is linked to the second law (in fact, all three laws could be described for any given motion). The Force of gases can be calculated to determine the acceleration of the rocket; then perhaps link it to the fact that as mass...

re: HSC Physics Marathon Archive Lol, apparently the marking criteria didn't want to anything to do with slingshot. Edit: After some consideration, Newton's law of gravity actually doesn't specifically describe the behaviour of gravity and hence the effect of gravity-assist. So I guess we...

re: HSC Physics Marathon Archive ^ Pro

re: HSC Physics Marathon Archive Oh yeah, forgot about conservation of momentum, that's a big one.