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I'm pretty sure they're the same in both cases (math/science). 0.002 = 2 x 10^-3 which clearly is 1 sig fig :P 4 sig fig would be 2.000 x 10^-3 which is (in decimal notation) 0.002000...

Had a few bc back when they were like $10. :'( If only...

I'm getting mine on thursday. What did you get? I don't want to go (to the presentation night) because I have a feeling my award is insignificant and its a waste of time :S

But I don't see how cos 3A has anything to do with the question :S

Use the sum and product of roots to evaluate: i. cos 2pi/9 + cos 4pi/9 - cos pi/9 This question doesn't make much sense to me as it doesn't look like a traditional polynomial. Give me a hint please (direction) :)

Sometimes it feels like everyone is so consistent though, and that the gap in marks/ranks will always be there :S

30 times?

Why would reliable result constitute to a valid experiment? It was valid because the experiment design took into account the hypothesised properties of aether, and would effectively test for the aim of the experiment (determine its existence). What was the aim of the experiment? To test the...

Lolwhat? Anyway, why/how measure earth's velocity relative to aether? This doesn't make much sense to me...

The nature of a stationary point refers to whether it is a local min/max turning point or otherwise horizontal point of inflexion.

Asianese already said you were correct...

Mhm... why are you using perpendicular distance :S

Not quite shadow...

It's not exactly a "semi-circle" (diameter not included as part of locus), and there is also a restriction on z which you haven't mentioned...

It's the exact same thing as what you did for the first answer. Just z3 is in a different location... (hint: consider where z3 is if it is reflected about the axis joining z1 and z2) What's your answer? Semi circle or a circle? I can't help you if I don't know where you're going wrong :S

There is another answer though

@OP, you are correct. There is no mistake...

You have questions by topic for mx2?? O: Could you please pm them to me!! I would greatly appreciate it :)

What enoilgam has said is very truthful; moving schools should not be taken lightly and there is a lot to consider. Education has always been an important thing to me, and so naturally I decided to move from my ~500 ranking school to a top 30 school (I was accepted) in order to seek better...

V: pi.r^2.h = 54pi Rearrange for h and then sub h into S = 2pi.r(r+h)