(2 A Proton is projected with initral speed of i. There is Electric field a bove the plane and bedow :t, Eso. anadogy for the proten's motron. O Find protan's range in terms of dị , n, 0, e, E. How long the proton stay abore the plane? Is it possible for profon to stay ebore the plane forerer, explain? what if we have electron instead of proton? a Make an

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Ising model of Ferromagnets

The Ising model is one of the easiest and most famous theoretical models for ferromagnetism in statistical mechanics. When a group of atomic spins aligns such that their magnetic moments are pointed in the same direction and produce a strong permanent magnetic moment in macroscopic size, the phenomenon is called ferromagnetism. The relative permeability of these magnets is greater than unity and increasing magnetization with the applied external field. Even in the absence of an external magnetic field, these substances retain spontaneous magnetization. An example of ferromagnets is iron.