query: Magnetic field and magnet
positive_passages.docid: 3386
positive_passages.text: How can magnets be used to pick up pieces of metal when the force from a magnetic field does no work?
negative_passages.docid: 118442
negative_passages.text: Why do we multiply the magnetic flux by the winding number?
negative_passages.docid: 13693
negative_passages.text: Post Problem Analysis - Rod in a cylindrical time varying magnetic field?
negative_passages.docid: 134943
negative_passages.text: If electromagnetic waves have magnetic fields, why beam of flashlight is not disrupted by a Magnet?
negative_passages.docid: 52502
negative_passages.text: Conservation of Energy in a magnet
negative_passages.docid: 39132
negative_passages.text: Why is there a magnetic field around a magnet if there are no charges moving?
negative_passages.docid: 109845
negative_passages.text: Electric fields and potential
negative_passages.docid: 96010
negative_passages.text: Must every magnetic configuration have a north and south pole?
negative_passages.docid: 72951
negative_passages.text: What is the magnetic field inside hollow ball of magnets?
negative_passages.docid: 90157
negative_passages.text: Can a magnetic field be induced without an electric field?
negative_passages.docid: 107934
negative_passages.text: Is there any potential associated with magnetism
negative_passages.docid: 137177
negative_passages.text: Do magnets work in outer space?
negative_passages.docid: 107695
negative_passages.text: From where do the permanent magnets get energy from?
negative_passages.docid: 106563
negative_passages.text: How to interpret the magnetic vector potential?
negative_passages.docid: 153346
negative_passages.text: Do magnets lose their magnetism?
negative_passages.docid: 43046
negative_passages.text: Do Maxwell's Equations overdetermine the electric and magnetic fields?
negative_passages.docid: 17170
negative_passages.text: How strong of magnetic field would noticibly attract a person?