The mass of the materials that can be recovered using a magnet is 1500 kg.
Law of conservation of matter
The law of conservation of matter states that matter can neither be created nor destroyed but can be converted from one form to another.
Based on this law of conservation of mass or matter, the mass of the scrapped car will remain constant and can neither change nor destroyed.
mass of scrapped car = mass of car recovered
Thus, the mass of the materials that can be recovered using a magnet is 1500 kg.
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