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no i dont mean like keeping the material at low temperatures... thats the liquid nitrogen's job lol i mean like keeping the liquid nitrogen 'liquid'....i.e. keeping it that cool...

wot about the costs for keeping at -196 degrees, not just 'getting liquid nitrogen'...you need to be able to maintain such low temperatures for long times...

how is a force produced in the case of induced emf/current??? think of a generator. you don't produce a force. You apply a force, and that induces an emf/current. They are opposite cases. Motor effect is applied in the motor - thats where a force is produced. In the case of the original...

basically, any chemical system with comparable amounts of a weak acid and its conjugate base or a weak base and its conjugate acid is a buffer rite? any such system where an equillibrium can be established is a buffer rite? cos when u add anything, then just according to le chatelier's...

yeah i just realised that X is negative... but its not a simple motor effect as i said earlier

helper, in the diagram given, an emf is being induced. hence a current is also being induced (supposing there is a circuit to join onto the two ends) how is it a simple motor effect situation? a motor effect situation is when u provide the current to make the conductor move.... (rt hand rule)...

Photocurrent Determined By Frequency As Well As Intensity? light, has been shown to be consisting of particles, i.e. photons. Each photon has an energy that is dependent upon Planck's constant and the frequency of the photon. Now, a photon will liberate a photoelectron from a metal only above a...

it is our bible jks besides, how is that going 'deeply' into the syllabus... iwasnt making any philosophical prediction or anything just wanted to know why the hell the silly bus says methods.... are they still referring to just that method in the book, but the components of it or are...

yup so diff in gravitational pe = work done coolies thanks heaps kfunk

kfunk, i think they mean: negative in the sense, negative terminal... it would be safe to presume this because it has become conventional for wires, conductors attached to a circuit to go 'this end is negative' meaning it is connected to the negative terminal.... and as for the left hand...

oh shite.. shoulda made it clearer i meant the plural 'methods' lool

wot is soda ash? never heard of it lol um, yeah, the reason i said sodium bicarbonate was cos its part of the buffer solution in the blood, technically it is amphiprotic but u could still get away with mentioning it as a naturally occurring base. could. :D

benzylethene is incorrect. yup.

how is baking soda a natural source? wouldn't it be better off to say sodium bicarbonate IS naturally occurring base but not give the example u mentioned, of baking soda? hmmm perhaps, sodium bicarbonate in the blood maybe?

not everything in chemistry is supposed to make sense ..lol :P

ok ive seen the following from diff sources: ethenylbenzene phenylethene personally i would put ethenylbenzene since that is wot the BOS seems to think of as the right answer...

elegant explanation? slightly off topic, but didnt wanna create a new thread for this so.. for space, i know this is so lame, but could someone explain how u would: 'explain that a change in gravitational PE is related to work done' i mean i can do it...but not very elegantly or...

ok then, thanks that clears things up a bit :)

my understanding is that as this is an INDUCED CURRENT question... i.e. concerning electromagnetic induction, you would NOT use right hand rule, rather the left hand rule or as some people do, use the right hand rule and then just write the opposite of the answer they get answer should...

...wot the lol :)