How does the kinetic energy of the particle in Figure P24.59 change as it traverses the velocity selector?
A. The kinetic energy increases.
B. The kinetic energy does not change.
C. The kinetic energy decreases.
 

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FIGURE 24.59 Inducing a magnetic moment in a piece of iron. Unmagnetized piece of iron 1. Initially, the magnetic moments of the domains cancel each other; there is no net magnetic moment. 2. The magnetic field from a magnet causes favorably oriented domains (shown in green) to grow at the expense of other domains. 3. The resulting domain structure has a net magnetic moment that is attracted to the magnet. The piece of iron has been magnetized. IS FIGURE 24.59 Inducing a magnetic moment in a piece of iron. Unmagnetized piece of iron 1. Initially, the magnetic moments of the domains cancel each other; there is no net magnetic moment. 2. The magnetic field from a magnet causes favorably oriented domains (shown in green) to grow at the expense of other domains. 3. The resulting domain structure has a net magnetic moment that is attracted to the magnet. The piece of iron has been magnetized. IS