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.

How would a small bar magnet be oriented when placed at position x?

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc