No magnet is permanently magnetised. If it is dropped from a great height enough times or heated, it loses it's magentism.
Magnesium is described as "paramagnetic" meaning it is weakly attracted by a magnet and cannot be permanently magnetised.
Materials that contain magnetic domains, such as iron, nickel, and cobalt, can be magnetized. Other materials like steel, certain alloys, and magnetic ceramic materials can also be magnetized. Materials that are not magnetic in their natural state, such as paper or plastic, can become weakly magnetized when exposed to a strong magnetic field.
A Weakly magnetised nail will pick up less paper clips then a highly magnetised nail, Hope That Helps:)
A weakly magnetised nail has minimal magnetic properties and will only attract a few magnetic materials, while a strongly magnetised nail has significant magnetic properties and can attract a wide range of magnetic materials with greater force. The strongly magnetised nail will hold its magnetism for a longer period compared to the weakly magnetised nail.
No, because permanently is "always" and constantly is "again and again" but constantly does not mean permanently
You can put a magnet near the metal. If it gets attracted or repelled, then it is magnetised
No.
Diamagnetic substances are not magnetised. Example: water is a diamagnetic substance, so it cannot be magnetised by any means.
what is the diffrence between a magnetised nail and a unmagnetised nail
A magnetically hard substance is one which can be permanently magnetised using a strong magnetic force. Steel is one such substance. (A magnetically soft substance can only be magnetised temporarily.)
A account that has closed permanently is when a account has been closed forever basically.