According to the Fermi gas model of the nucleus, its protons and neutrons exist in a box of nuclear dimensions and fill the lowest available quantum states to the extent permitted by the exclusion principle. Since both protons and neutrons have spins of 1/2 they are fermions and obey Fermi-Dirac statistics. (a) Find an equation for the Fermi energy in a nucleus under the assumption that A = 2Z. Note that the protons and neutrons must be considered separately. (b) What is the Fermi energy in such a nucleus for Ro = 1.2 fm? (c) In heavier nuclei, A > 2Z. What effect will this have on the Fermi energies for each type of particle?

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

(science)study the following ocean currents map. an ocean currents map is shown. on the map the locations for san diego, california and savannah, georgia are marked. there is a looping current from the north past san diego and a looping current from the south near savannah which statement is most likely correct about the average temperatures in san diego, california as compared to savannah, georgia? it is higher in savannah because of the cool ocean currents from the south. it is higher in savannah because of the warm ocean currents from the north. it is lower in san diego because of the warm ocean currents from the south. it is lower in san diego because of the cool ocean currents from the north.