Try to solve this problem :) Do as much as you can, i got stuck. They are quantum mechanics problems

3. Consider a harmonic oscillator H = p3/2m + (k/2)x2.(a) Calculate pln), that is, the momentum operator acting on the nth energy eigen-state.(b) Calculate p (n).(c) Calculate (p ) for the n energy eigenstate when j is odd, where p' represents thej-th power of p.(d) Why does your answer to (c) make sense physically? Without explicit calculation,what is (x/) for the n energy eigenstate where j is odd?