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From wikipedia's article on special relativity: "The incompatibility of Newtonian mechanics with Maxwell's equations of electromagnetism and, experimentally, the Michelson-Morley null result (and subsequent similar experiments) demonstrated that the historically hypothesized luminiferous aether...

I'm not overly familiar with these pieces (or piano - presumably what you play) but I know the HSC markers want your pieces to be contrasting styles. So for music two I'm not sure playing two pieces both by Chopin would be best (unless they are quite contrasting). If you're unsure just check...

You are pretty much correct. When the particle exits the field there is no longer a force acting on the particle (so no work is done on it). If the net force on a body is 0 then (by Newton's second law, F=ma) the acceleration is 0. Thus its velocity remains constant from the point where it exits...

The observer moving with the muons would observe the muons to hit the ground. This is because from the muons' frame of reference they measure proper time but contracted length. This means 2 microseconds would pass for the muon (and the observer moving with them) but the distance to the ground is...