Recent content by delrepublica

anybody??

please help!

Homework Statement Here's a problem I'm having: The primitive vectors of the hexagonal lattice are: a1 = ck a2 = (a/2)i + ([a√3]/2)j a3 = (-a/2)i + ([a√3]/2)j Find the primitive vectors of the reciprocal lattice, i.e. b1, b2, and b3. Homework Equations I do know that the...

Thank you guys so much for your help! And yes, the A is angstroms, which made everything sooo much easier! All I needed to do to solve it was use the equation En = [(Dirac's constant)^2 * pi^2 * n^2] / [2m* L^2] and for the zero-point energy you just use n=1, so easy enough =)

[SOLVED] Energy in a Potential Well I so need help with this! "The width of a one-dimensional potential well of an electron can be assumed to be about 2 A (there's a weird-looking bubble on top of the A). Calculate the energy of an electron (in Joules and in eV) from this information for...