query: Does a permanent magnet loose its magnetism?
positive_passages.docid: 153346
positive_passages.text: Do magnets lose their magnetism?
negative_passages.docid: 112601
negative_passages.text: How has Magneto aged so gracefully?
negative_passages.docid: 48631
negative_passages.text: Does the magnetic field due to the current from a motional emf induce a counter emf?
negative_passages.docid: 109590
negative_passages.text: Work done by the Magnetic Force
negative_passages.docid: 79670
negative_passages.text: Magnetic Shielding?
negative_passages.docid: 78312
negative_passages.text: Can I levitate an object without using an electromagnet?
negative_passages.docid: 96010
negative_passages.text: Must every magnetic configuration have a north and south pole?
negative_passages.docid: 120398
negative_passages.text: Direction of H and B inside and outside a bar magnet
negative_passages.docid: 112458
negative_passages.text: Moving conductors in magnetic fields: is there electric field or not?
negative_passages.docid: 115158
negative_passages.text: Can magnetic fields be redirected and focused at one point?
negative_passages.docid: 151221
negative_passages.text: Does a cooling object lose mass as it radiates?
negative_passages.docid: 56708
negative_passages.text: What do we mean with magnetic monopole and dipole?
negative_passages.docid: 52053
negative_passages.text: Does a magnetic field do work on an intrinsic magnetic dipole?
negative_passages.docid: 50817
negative_passages.text: What computer components are currently vulnerable to magnets?
negative_passages.docid: 48969
negative_passages.text: The magnetic field of a magnetic monopole
negative_passages.docid: 11821
negative_passages.text: Shielding magnetic field without mu-metal
negative_passages.docid: 89355
negative_passages.text: Why does Earth behave like Natural Bar Magnet?