[ksack001]

I am having trouble understanding this problem and answering it can anyone guide me in the right direction, I attached a word file of the problem? I know it has to do with the particle in the box theory which I understand the basics of but I cant figure out this graph and apply what i know. Thanks

[_cheers]

Yes, its a particle in a 1-D box. E1 corresponds to n=1. At n=1 what is the energy? Its ground state, so there is no energy (ignoring zero-point energy). When looking at a wave, energy corresponds to the number of nodes in a wave (simplest explanation). So, zero energy, zero nodes. At E2, n=2. 1 node...and it goes up from there...n=3 you get 2 nodes etc etc. So, you just need to draw a sin wave with no nodes and one node.

I'm not totally sure what is meant by part b. But I'm guessing they want a wave equation to go with a, b, c..
find the length (x) at a,b,c and stick that in the wave equation with n=1 and n=2 (depending on which wave your using)

hope that helps some....

[ksack001]

Thanks I firgured out what you described in part A. for part B not too sure yet but im assuming i just use the aprox length and the equation as you described thats as far as i got and what I believe is correct. I dont know about c or d yet

[_cheers]

I think you could just use length a/L, b/L, c/L
 
sorry, i didnt even see the other parts and I see you have to deal with Tunnelling....

when is this due? I'll look at it tommorrow and see if I can help.

[ksack001]

its not due its like a practice thing we already had the exam a while back but i want to be able to competely do this problem without any problems when the final comes i know something similar will be on there

[_cheers]

I did look at it...but I'm at a loss    take a look at your notes on tunnelling and probability...I looked but am unsure how to apply it to your weird diagram.
Have you tried posting on a physics forum or on cramster? Usually a moderator on cramster will answer if no one else does....

[ksack001]

Ya I know the thing is wierd I havent posted anywhere else I will just go bother the teacher I can never find.