Physics
The method of magnetisation is:

Passing alternating current through it
Heating a magnet
Passing direct current through it
Hammering a magnet

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Physics
Air moves from the region where the air ________

Humidity is high to the region where the humidity is low
Pressure is high to the region where the pressure is low
Pressure is low to the region where the pressure is high
Humidity is low to the region where the humidity is high

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