wavefunction/momentum confusion 1. The problem statement, all variables and given/known data Given a wavefunction [tex]\Psi[/tex]=Asin(cx) of an electron can i find it's momentum? 2. Relevant equations Thats what i dont know. 3. The attempt at a solution Wave function squared is the probability if finding the particle. So i'm given the probability of finding a particle in space how do i find momentum when momentum is dependant on time but the given wavefunction is not?