Recent content by wgdtelr

The scattering amplitude in the Born approximation is as f(θ) = (-2m / (h/2π )2 K ) * integral 0 to ∞ (r sin Kr V(r) dr) Substituting V (r) = -V0 exp(-r2/2a2) We get f(θ) = (-mVoa3√π / 2(h/2π) ) * exp (-k2a2sin2θ/2 ) Differential crossection dσ / dΩ = / f(θ) /^2...

Homework Statement A particle of mass m and spin 1/2 is moving in an infinite, symmetric potential well V (x) = { 0 -L<= x <= L. = ∞ otherwise.. Under the effect of a weak external magnetic field. B = -B k^ ; -L <= x <= 0 = -B i^ 0 <= x <= L...

yaaaaa I've got zero.. after doing the angular part.

here it is infinite long cylinder and what limits can we take in z- direction.

Can u please give me the limits under which i'Ve to integrate for r ,Phi, z.

Homework Statement calculate total induced charge on a charged cylinder. where the surface charge density is given by sigma= 2eEo cos(phi) Homework Equations the total induced charge on the cylinder is Integral of (sigma) da can u calculate this integral fo me ... it very...

thank U very much diazona...

Homework Statement Show that the Fields E= Eo exp{i (k.r-ωt)} and B= Bo exp{i(k.r-ωt) are solutions of Maxwell's Equations in source free vaccum.Starting with maxwells equations in vaccum. And there by Derive the relations between the Magnitudes & Phases of Eo, Bo, ω, k...