How Does Time Dependence Influence Expectation Values in Quantum Mechanics?

[kasse]

If $$\Psi (x,t) = \psi (x) g(t)$$, should I then use $$\Psi$$ or $$\psi$$ when calculating $$<p>$$ and $$<p ^2>$$?

 

[PullMeOut]

you should use the $$\Psi(x,t)$$ while calculating expectation value
it should include t parameter