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so-crates
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What causes the force of attraction between two permanent magnets? I'm well aware that F = qv x B, but what charges are moving?
so-crates said:So it is the valence electrons in the metal, and not the nuclei? If it just the electrons, why does this cause a force on the entire piece of metal and not just cause a current to flow ?
krab said:Electron spins are dipoles and there is a force law between these spins that is proportional to the magnetic moment of each and to the reciprocal of the cube of the separation. This force law is not F=qvxB.
The force between two magnets is a result of their magnetic fields interacting with each other. This force is caused by the alignment of the magnetic dipoles in the magnets, which can either attract or repel each other depending on their orientation.
The strength of the magnetic force between two magnets is determined by the strength of their individual magnetic fields, which is influenced by the material they are made of and their size. The distance between the magnets also plays a role in the strength of the force.
Yes, the force between two magnets can be calculated using the equation F = (μ₀ * m₁ * m₂) / (4π * r²), where μ₀ is the permeability of free space, m₁ and m₂ are the magnetic dipole moments of the magnets, and r is the distance between them.
The force between two magnets is strongest when they are aligned in opposite directions, resulting in attractive forces. When they are aligned in the same direction, the force is repulsive. The force is weakest when the magnets are perpendicular to each other.
Yes, the force between two magnets can be shielded or blocked by using materials such as iron or steel, which are highly permeable to magnetic fields. This is because these materials can redirect the magnetic field lines, reducing the force between the magnets.