Recent content by war485

ah yes sorry, it is balanced when the - on I2 is removed. I have nothing more to add.

Technically I'm supposed to have a total of 8 optical modes but only 4 of them were seen in a solid (by spectroscopy). So I suspect there's some degeneracies and symmetries involved, but I don't know which ones. I have two sets of assigned degeneracies: frequency; degeneracy set 1; degeneracy...

Your equation isn't balanced. Can you work out its half-reactions?

I'm stumped as to how many optic branches (modes) are present if there are X number of molecules in a unit cell and Y number of atoms in each molecule. I know that each individual atom has 3 degrees of freedom and more generally in a single unit cell, there are 3 acoustic branches (modes) and...

I was given 0.222 V. 0.197 V would be for a saturated chloride solution, ooh, oups, that belongs to a followup problem (not relevant to this thread), I see what you mean now. It should say 0.222 V not 0.197 V

ah yes I forgot to put that negative sign on my post. So RHE at pH 7 = 0.4137 V should really be read as RHE at pH 7 = -0.4137 V everything below that assumed that sign was there in the first place. Are my signs or thinking inconsistent? I was trying to think of everything in terms of SHE...

Homework Statement Change your electric potential readings from a Ag/AgCl system to a RHE (reversible hydrogen electrode) system at pH 7. For example, 0.3 V vs Ag/AgCl and -0.1 V vs Ag/AgCl Homework Equations Ag/AgCl 0.222 Volts RHE 0 - 0.0591*pH Volts The...

It's clear but there's 2 follow-up questions in my mind. In your example, you had: V = V2cos(θ1 + φ) So you are saying that: θ2 = θ1 + φ = (ωt) + φ = a new phase angle? Relating this back to impedance, curious, "if" the frequency was the same for both the current and voltage, does that...

We talked about AC circuits and phase shifts were discussed. Voltage changes "lag behind" current changes so that's how we get phase shifts. It's like a sinusoid so fine. Then we talked about impedance. There's a real and "imaginary" component to impedance, graphed on x-axis and y-axis...

Hurkyl, I agree that GF(256) is a finite field, but if we're both wrong, then how would I handle whole negative numbers?

thanks Mark

Homework Statement * note that I meant fields in the abstract mathematical sense, notphysical (i.e. electric) fields! * Finding the determinant of a matrix in GF(28) I want to know if it is using mod 256 or mod 255 in the field of GF(28) Homework Equations Just math The...

obviously 3, 6, 9, etc... as I originally thought, but that would be almost too easy. Would this set "skip" over number 51 (which is 17x3) and 102 (17x6), ... etc? Should this set just be listed from 3 to 48? or can I just list 3, 6, 9 and then put a "..." and assume others will know what I...

whoups! Part b does not refer to the previous set in part a. Part b is asking for a completely new set.

Why is it the remainders after division by 17, and not before, that has to be multiples of 3?