We found Hermitian realizations of the position vector (r) over right arrow
, the angular momentum <(Lambda)over right arrow> and the linear momentum (
p) over right arrow, all behaving like vectors under the su(q)(2) algebra,
generated by L-0 and L+/-. They are used to introduce a q-deformed Schrodin
ger equation. Its solutions for the particular cases of the Coulomb and the
harmonic oscillator potentials are given and briefly discussed.