In general relativity, gravitational red shift is caused by

a. the slowing of clocks due to increased gravitational kinetic energy.

b. the slowing of clocks due to increased gravitational potential energy.

c. the slowing of clocks due to lower gravitational kinetic energy.

d. the slowing of clocks due to lower gravitational potential energy.

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