Recent content by olee

found this on this page http://www.chemguide.co.uk/mechanisms/nucadd/reduce.html#top can someone explain why it is simplified? and how does it really happen?

this is from Nick Lane's Oxygen book I didn't quite understand this paragraph regarding the sudden release of a large amount of oxygen from cyanobacteria following the ice ages i don't understand how it's better to bury it. surely reacting with organic matter would be better as it is...

i understand that everything else is less as they are (in turn) made from hydrogen, but why was so much of hydrogen made in the big bang? i got a feeling because one proton and one electron is stable. (similarly, helium was produced as 2 nucleons + 2 electrons is also very stable) but I've...

Thanks for the reply. The article says they used http://i38.tinypic.com/1zobuyq.png". Surely the proton size affects spectroscopy, does it not? I'm interested in the fact that you mentioned that it's more interesting for physicists. I'm not debating, but I was wondering if you could explain why...

Hi, i was wondering what the implication is of the fact that the proton is smaller than was thought to be. there is an article about it http://www.chem.info/News/Feeds/2010/07/topics-plant-operations-the-proton-smaller-than-thought/" thanks

thanks mate! i appreciate it!

.: k=1 thanks! but i was wondering, is this method true with all matrix questions like this? or is it specific to this one?

i think..

like this

Thanks for the reply. I've decided to do this for part (ii) i'm unsure on how to solve for k in order to do part (iii) without Gaussian methods.

Homework Statement FP1 (MEI June 07) Homework Equations The Attempt at a Solution (i) Find the value of n I multiplied the top row of A by the left column of B and got the equation: -5-16+k=k-n moved stuff around and ended up with n=21 (ii)Write down the inverse matrix A-1...

well I am not too sure :S but that's the question

Homework Statement A box is held at rest on a smooth slope. The slope is inclined at an angle of 18◦ to the horizontal. Given that the normal reaction force between the box and the slope is 79 N, what is the mass of the box? Homework Equations none The Attempt at a Solution...

Homework Statement I have two equations in which I need to solve for T, involving two different variables and I'm not too sure how to solve. (G = 9.8) 10 + T2cos25−T1cos45 = 0 T1sin 45+ T2sin 25−8g = 0 Homework Equations 10 + T2cos25−T1cos45 = 0 T1sin 45+ T2sin 25−8g = 0 The...