Check if the magnet acts on light steel objects by placing cardboard, plywood, glass, water, tin between the magnet and the object.

The magnet will act on light steel objects if you place cardboard, plywood, glass between them, but will not work if you place a sheet of tin. since the steel will shield the magnetic field. The lines of force of the magnet will close through it and will not reach other objects.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.