Unless you scratch the disk while placing the magnet on the disk, then nothing will happen. A magnet would have to be powerful enough to extract the hemoglobin from human bloodcells to be able to effect the disk.
The 3.5 floppy disk does have magnetism within them and for this reason, magnets destroying data on the floppy disk fueled the myth about magnets destroying your computer. If you buy a cheap magnet and put it near a floppy disk, the magnet will stick to it. After a few seconds, the information on that floppy disk will be destroyed and you will no longer be able to access the data.
it attracts
nuthin at all you will have no effect
Usually, nothing.
Nothing. Copper is not magnetic.
Jam/Jelly has no effect on the magnet or its magnetism, but it will cause the magnet to become sloppy and sticky.
its opens up normally as any other disk does.
The magnet will attract the iron, but will not attract the sulphur.
all your memory will be gone forever
To erase a floppy disk with magnets, you would need a strong magnet, such as a neodymium magnet. By placing the magnet close to the disk's magnetic media, the magnetic fields can disrupt the data stored on the disk. However, this method is not highly reliable, as the effectiveness depends on the strength of the magnet and the type of disk. Additionally, using magnets can potentially damage the disk, making it unusable.
The coil will align itself with the magnetic field (poles) of the magnet.
It destroys the hardware inside the ipod and it stops working