  A number of charge-magnet paradoxes have been discussed in the literature,
beginning with Shockley's famous 1967 paper, where he introduced the notion of
hidden momentum in electromagnetic systems. We discuss all these paradoxes in a
single, general context, showing that the conservation laws of linear and
angular momenta can be satisfied without the need for hidden entities, provided
that the Einstein-Laub laws of force and torque are used in place of the
standard Lorentz law. Einstein and Laub published their paper in 1908, but the
simplicity of the conventional Lorentz law overshadowed the subtle features of
their formulation which, at first sight, appears somewhat complicated. However,
that slight complication turns out to lead to subsequent advantages in light of
Shockley's discovery of hidden momentum, which occurred more than a decade
after Einstein had passed away. In this paper, we show how the Einstein-Laub
formalism handles the underlying problems associated with certain paradoxes of
classical electrodynamics involving a static distribution of electric charges
and a magnet whose magnetization slowly fades away in time. The Einstein-Laub
laws of electromagnetic force and torque treat these paradoxes with elegance
and without contradicting the existing body of knowledge, which has been
confirmed by more than one and a half century of theoretical and experimental
investigations.
