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ok cool. i hope we don't need to know these derivations, i don't think we do anyway. you mentioned galilean relativity - in my original post, i asked about the principle of relativity. are these related in any way? what is the principle of relaitivity? i am assuming it is not special relativity...

bit off the topic but relevant still. 'discuss the principle of relativity' someone pls help with this dotpoint... oh, and what was the significance of einstein's assumption of constancy of speed of light thanks

the negative result didn't dishearten ardent supporters of the aether model.. they tried countless times to prove its existence by way of detecting an 'aether wind'... oh and btw, what does the particle model of light proposed by einstein (which is studied in ideas) have anything to do with...

specimen paper? where can one get that?

electrolytic cell = has a power source...

the only reason why the curve at the very beginning of time "slopes slowly" is because an equilibrium hasn't even been established yet. that is to say, it is in the process of forming equilibrium, with concentration of hydrogen and nitrogen decreasing and that of ammonia increasing. however...

yea, as stated earlier in my post, it would probably be wrong to say that iron deposits on the iron nail, rather it would do so at the 'bottom of the beaker' due to sheer force of newton's gravity, nothing else... u would lose a mark at max for saying that...i.e. one chemical principle not...

My answer agrees with Just James and Captain Karl.

i put down that in my answer,too.

for those who think that iron deposits on the magnesium strip, please provide a justification, much appreciated.

i think everyone is familiar with what happens during launch - accelerates to high speeds - lying flat on back - g forces not acting longitudinally - eyeballs pushed back due to inertia - eyeballs remain in the eyes on returning to earth, i should think that the capsule (is that what the...

well, i don't think there would be much of a colour change just by more Mg ions going into solution...so i didn't mention it. Maybe...well i'm sure unless they're BOS nazis, they won't cut any marks for writing that. If you contradict yourself, you are likely to lose 1 mark. I think anyway.

everybody, I, personally, am not too happy with the way they asked this question. Clearly this is a sort of question that even someone not doing the option could answer - it is not something particular to Shipwrecks. In my opinion, it is directly related to the fourth focus idea in Production...

wth how can 14 be C? i put down D, cos the river source has greatest dissolved oxygen...and pH is greater in town than river source so has to be D and question 8 has to be less than 1.0 so it is A... it is diprotic...the first rxn goes to completion, the second rxn doesnt...that means...

yeah the two posts above this, are both right... :( :) mixed feelings... *sigh*

the beaker that the student set up is NOT a galvanic cell, as such, because the reactions that take place aren't physically separated and there isn't an external conductor that carries electrons from one electrode to the next and so forth.... butttttt it follows the same principles of a...

yeah, i think it was 0.6 g

eggsactly. ok cool. so how did he actually generate electricity? was it by connecting two wires of different metals to the muscle of a frog? if so, how the hell did he notice the generation of electricity? by twitching of muscles? did he call this animal electricity? what was his theory in...

ok, what exactly did galvani do, and what was his thinking? different sources speak differently. some say he passed electricity into muscles of frog some say he produced electricity from muscles of frog some say he... what did he do? what was his theory?

yes. you woulddo that.