Pleaseee help as soon as possible!! Mary Anne walks 1000 meters north to the store and walks back 900 meters south to her friends house. The friend’s house is 100 meters to the north of Mary Anne’s house. What was Mary Anne’s Travel Distance?
-2000 meters (I chose this and got it wrong)
-100 meters south
-1900 meters
-100 meters

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states