In general, no.
at circumference
Yes it does!
No the temperature doesn't the size does.
A permanent magnet (i.e. not an electromagnet) will be demagnetised by heating it.
A magnet will not affect the Mirena IUD.
no
NO!!! the strength of magnet is not affected by temperature
A permanent magnet can affect magnets and electromagnets.
it dosent make the magnet stick anymore
No, but if you leave the magnet in lemon juice long enough it will start to corrode.
Magnet, impacts the video or audio reel due to its magnetic fields
The shape of a magnet can affect its magnetic field strength and direction. For example, a bar magnet has a strong magnetic field at the ends (poles) but weaker in the middle, whereas a horseshoe magnet concentrates its magnetic field between its poles. Different shapes can also affect how magnets interact with each other and with magnetic materials.