For the one-group neutron diffusion equation dx answer the following: a. specify two linearly independent solutions to the homogeneous equation when fission production is greater than absorption loss for a general source s(x) b. specify two linearly independent solutions when fission production is less than absorption loss. c. if extrapolated boundary conditions are assumed and s(x) sx, write the solution for the flux for part b.

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.

Ajogger runs 5.0 km on a straight trail