Quantum Mechanics Answers

Determine the commutator [ Lz ,Ly]

For what values of the constant (c) will the function f(x)=Ae-αx be an eigen function of the operator Q=d/dx d/dx+2/x d/dx+c/x? Whats the corresponding eigen value?

6.5=0(3.6)+1/2(3.6)

How does number of blades in a windmill effects its energy and speed? And how many blades should be there in a windmill?

What is potential energy in quantum mechanics?
proof

A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest . If the incident beam carries 10W of power , find the force exerted by it on the surface .

A certain rifle bullet has a mass of 8.61 g. Calculate the de Broglie wavelength of the bullet traveling at 1289 miles per hour. Physical constants can be found here.

The wave function of a certain particle is φ = Acos^2x for -π/2 to π/2(1) find the value of A(2) find the PROBABILITY THAT PARTICLE BE FOUND between O AND π/4?

What happen when electron gently released in electric field

if A^ and B^ are hermitian and anti-hermitian operators respectively.check the hermiticity of the commutator [A^,B^] of the two operators .