In a source-free region, show that dE a*E V²E – po at af
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- Asystem consist of 5 indistinguishable particles, the total energy U=8£ , the degenerey gi = 4 for each energy level, the distribution of the particles on the energy levels shows in the figure (note that, there is no restriction on the number of particles on each energy state and there is no zeroth energy level). Calculate the entropy of the system( K3=8.62 x10 eVK'). k 1 2 3 4 5 6 N . EYE 4 3 2 . 1 :: .. w 5.59 x10-4 eVK-140 6.59 x10-5 eVK-1 80 7.59 x10-6 eVK-1.00Neglect the buoyancy force on an oil droplet and show that the terminal speed of the droplet is vt mg/b, where b is the coeffi cient of friction when the droplet is in free fall.An atomic nucleus can be crudely modeled as a gas of nucleons with a number density of 0.18 fm -3(where 1 fm = 10-15m). Because nucleons come in two different types (protons and neutrons), each with spin 1/2, each spatial wavefunction can hold four nucleons. Calculate the Fermi energy of this system, in MeV. Also calculate the Fermi temperature, and comment on the result.