 Depending on the strength of the magnet, the repulsion may be so strong that it is impossible to push the magnets together unless aided by machinery.Proton motive force does work on the system by bringing ions back towards the epidermis of the root or surface of a root hair along with the protons.From the surface of the soil/root interface, specific carriers, like H+/K+ symporters allow the specific ions to come into the cell and the out the plasmodesmata/symporters/antiporters of the side of the cell facing away from the soil so that the essential element can make its way up the plant to the area it is needed so that it may supply the plant with important nutrients that are vital to the plant's being able to reach maturity.