2. The strong and powerful magnets are made of
3. A magnetic
is used for navigation as it has a pointer that always points
4. A magnet can be demagnetized by
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↪️The strongest permanent magnets in the world are neodymium (Nd) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd2Fe14B structure.
↪️A compass is a navigational instrument for determining direction relative to the Earth's magnetic poles. It consists of a magnetized pointer (usually marked on the North end) free to align itself with Earth's magnetic field.
↪️The primary method for deliberately de-magnetizing magnets is by heating them. Every magnetic material has a characteristic temperature known as the Curie Temperature.
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2.steel 3.compass 4.hammering it,placing it in water or electrocuting it again by a different position
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