The net external force on the system should be zero since the individual forces of the charges due to the electric field cancel (the net charge is 0). This implies the center of mass doesn't move, which would give us another equation for the positions that we could make use of.
Homework Statement
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Here's the problem from the homework. I've called the initial positions in order as 0, l, and 2l.
Homework Equations
The most important equation here would have to be
|V - w2*M| = 0,
where V is the matrix detailing the potential of the system and M as the "masses" of...
I ended up getting the solution. I was making a mistake by splitting it up into |n;+> and |n;->. Instead, I factored out a phase and then normalized the whole thing. The answer came fairly quickly from there. Thanks.
Homework Statement
The problem is given above. I am struggling on the first two parts, where I am tasked with finding gamma and beta.
Homework Equations
For spin one half states in arbitrary directions, I know that psi = a*|n;+> + b*|n;-> .
|n;+> = cos(theta/2)|+> +sin(theta/2)*ei*phi|->...
Google Hangouts is an extension of google + to talk over voice and video. I think it'd be easier to communicate, since I am utterly clueless with this problem. I will mark this as solved for now, since I think I need to review quite a bit of material before tackling this problem again. Thank you...
Where are the four equal resistors connected to V1? We don't replace the OpAmp with a short, but do we replace it with nothing at the point?
If possible, would you like to talk over Google Hangouts? I think we can get the problem done more quickly in that way, and it'd be easier to talk to each...
My friend gave the problem to me and told me it's for an online course he's taking. It's not out of a book unfortunately.
I have tried to solve the problem but am still unable to get it, and I doubt I can do it at this point. Would you mind sharing a solution?
I am attempting to use superposition, and have hit some road blocks. I don't believe my circuit diagrams are correct. I have assumed that the op amps can be replaced by a short. Perhaps this is wrong and I need a VCVS.
I am beginning to rethink a major in electrical engineering...
I believe it is V with reference to the ground. We haven't talked about the difference between floating and ground sources, so I'm not too sure. I'm fairly certain that the only ground reference is at the bottom of the chain. I also assumed that the output voltages from the Op Amp is 0 since we...
Sorry, I've attached the problem with work. The blue pen is what is given and the pencil is my own work. That value for v- that I had written was wrong. The op amp is ideal so we assume that v-=v+.
I will be trying the problem without making the assumption that no current flows into the op amp...
Homework Statement
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Hello, I have attached the problem below. I am trying to find the value for v1 - v2 and iA. The given values are V, RA, and R for the other resistors. There are no numbers.
Homework Equations
It is given that the op amp is ideal, therefore v- = v+, and i- = i+ = 0 for...