Recent content by Distr0

It appears i was using wrong values for the conductivity and Boltzmann constant, got the correct answer now.

Problem: Calculate mobilities of electrons and holes (assuming equal) in grey tin, silicon and germanium. Calculate also the mobility that would be necessary for diamond to have an intrinsic conductivity of 10-12 S m-1 if the hole and electron mobilities were equal. Working: \sigma = Nc...

Actually i just found something on Variation theory, it's used to minimize the energy eigenvalue by varying the linear coefficients. Just hybridisation i can't find information on now :(

Homework Statement Give examples of methods used to find approx. answers to the Schrödinger's eqn. of systems too complex to be solved analytically. Homework Equations None required. The Attempt at a Solution I understand there are three methods commonly used, those mentioned in...

I was given two very similar questions (which I still can't tell apart) Question 1 A uniform horizontal disc of mass M and radius R rotates about its vertical axis with angular frequency w. Find and expression for the moment of inertia. Solution Mass per unit area (lambda) = M/piR^2 Mass...

ok i'll ask my lecturer about that tomorrow as in her solutions to this she has written I=MR² thanks for the help

Homework Statement A gyroscope consists of a uniform disc of mass M and diameter d attached at its centre to a light spindle of length l perpendicular to the plane of the disc. i) Show that the moment of inertia, I, of the disc around the axis of the spindle is Md²/8. Homework Equations...

yeh that's the thing that got me rohanprabhu, thermal physics really isn't my thing right now. exam in 12 days too thanks for the help anyway, hate being asked questions which we haven't been taught

ok cheers and yes I've approached the problem in 3 stages for this. work from -15 to 0 work for melting work from 0 to 20 thanks for the quick reply, I am sure i'll be back

if ice is heated to say 20C so it melts (done so slowly) is work done during the melting process equal to the latent heat? (I'm assuming there are no volume or pressure changes) just a small thing i can't recall or find a quick answer for right now.