1. The problem statement, all variables and given/known data http://img853.imageshack.us/img853/2532/70224197.png [Broken] 2. Relevant equations i know schrödingher eq. and basic quantum formula 3. The attempt at a solution i showed that the equality at the first question but i can not start from (a) part. how and where am i supposed to start for (a) part of question?