1. The problem statement, all variables and given/known data a free particle of mass m moving in one dimension is known to be in the initial state ψ(x,0)=sin(k_0 x) 1. what value of p (momentum) will measurement yield at the time t,and with what probabilities will these values occur? 2. suppose that p is measurement at t=3 s and the value (h/2pi)(k_0) is found. what is ψ(x,0) at t>3 s? 2. Relevant equations quantum mechanics by Liboff chapter 6 3. The attempt at a solutionI dont know, must I normalize it? for part 1 when I integrate the expectation value of the momentum that is infinite because we have this ∫_(-∞)^∞▒〖sink_0 x) cos〖k_0 x〗 dx〗 and another question what probabilities occur? for parti 2. I dont know what can I do. can I write( exp i(k_0 x)-exp i(k_0 x))/2 and we know for free particle we have A exp i(k_0 x)-Bexp i(k_0 x) and I use it?