Recent content by Justin Hawk

It is my understanding that electromagnetic radiation is absorbed by an electron and then emitted at another angle. So why does particle size affect scattering when the phenomenon involves electrons? Also, why does the size of the wavelength of the light relative to the diameter of the particle...

Homework Statement Determine the threshold frequency of a metal with a work function of 7V Homework Equations Threshold frequency 'f'=W/h where w=work function, h=planck's constant The Attempt at a Solution This is such an easy question, but I am hung up on how to treat a work...

Thanks a bunch, that's a great source, answered both my questions!

No detail on my three questions on wikipedia, but I found an answer for my third question elsewhere, so any help with the others would be appreciated.

research task, I don't need to go into this much detail I guess but I would like to understand the process in more detail.

I have three questions I can't find an answer for online about catalytic converters: 1. How does rhodium remove nitrogen from nitrogen oxides? 2. Why do catalytic converters need to be hot to operate at full efficiency? 3. Why are platinum and rhodium used? What properties do catalytic...

Thanks!

I have read in a lot of places the PAN acts as a very good reservoir of nitrogen dioxide. I can't find much information on why though. All I have found is that PAN is thermally unstable and has a very short lifetime at typical tropospheric temperatures, but becomes much more stable at lower...

Can someone explain to me how an atom can absorb the energy of an incident photon without being ionised? What is the photon energy transformed into and how is it transferred between the photon and the atom (what part of the atom absorbs the energy?). I can't find anything helpful online - the...

Your an absolute legend, that's cleared it up really well for me! thank you so much for taking the time to help me.

Homework Statement An enemy fighter jet has invaded friendly airspace and is traveling on a bearing of 40 degrees. At the time they scramble an interceptor from a nearby airbase, the enemy jet is 200km away and on a bearing of 10 degrees from the airbase. The enemy jet is traveling at...