Aspin 1/2 particle is in an eigenstate of sy with eigenvalue h/2 at the initial time t = 0. at that time, it is placed in a magnetic induction b = b2, and it is then allowed to precess in that induction for the time t. then, at that instant t, b is instantaneously rotated from the z to the y direction, becoming b = bį. after another identical time interval t occurs, a measurement of s, is carried out. what is the probability that the value +h/2 will be found? assume that the gyromagnetic ration is y.

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

A6,600 kg train car moving at +2.0 m/s bumps into and locks together with one of mass 5,400kg moving at -3.0m/s. what is their final velocity? +0.50 m/s -1.0 m/s +2.5 m/s -0.25 m/s

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.