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1 why do superconducting currents flow on the surface of a superconductor2 why is the electric field zero inside a
1 was there a stage in the development of atomic physics in which models played a role comparable to that now played by
when two metals are separated by a very thin insulator electrons from one metal can tunnel through the insulator to the
1 why for permanent magnets do we use materials composed of small crystals and having large imperfections also why for
1 why can the exchange interaction have a significant effect on a narrow band with a high density of states as the 3d
1 copper has a filled inner 3d electronic subshell and one 4s valence electron explain why you would not expect it to
1 the paramagnetic susceptibility of the rare earth elements is generally greater than that of the transition elements
1 discuss the use of a paramagnet as a thermometer in what temperature range would it be useful2 the magnetization
1 are there analogies between superconductivity and superfluidity2 superconductors whose cooper pairs are small enough
1 a superconducting film can be used as a high sensitivity bolometer an instrument for measurement of heat radiation
1 why is it impossible for two protons to fuse as in the first step of the proton-proton cycle without a beta decay
1 why is it reasonable to expect that the space distribution of protons in a nucleus is approximately the same as the
1 explain why the scattering differential cross section is isotropic if only the 1 0 state participates in the
1 the nucleon and antinucleon are each about 7 times more massive than the pion how is it even conceivable that the pi
1 in what ways are electromagnetic and color charges similar and different2 the fact that the photon is massless makes
when a local phase transformation is constructed in the electromagnetic case a charge is inserted and the phase angle
1 compute the speed ofa electrons andb protons that fall through an electrostatic potential difference of 10 million
1 a passenger walks forward along the aisle of a train at a speed of 13 msec as the train moves along a straight track
1 the distance to the farthest star in our galaxy is of the order of 10 5 light years explain why it is possible in
in neutrino-nucleon scattering the actual interaction is mainly with u or d quarks athe processes in parts a and c and
1 what is the hidden symmetry in the electroweak theory in answering this it may be useful to recall the yang-mills
1 the cross section ratio r of 18-6 is based on the quark-parton model this result is altered slightly in qcd because
1 local electromagnetic charge conservation depends upon gauge invariance and the existence of an associated massless
using the major-minor species model calculate the adiabatic flame temperatures of methane-air mixtures at 1 atm