Summary: The Force Questions
... 1. If two magnets are attracting each other, what do you know about the poles? a. The attracting poles must be a south and a north. 2. How does a compass work? a. The compass needle is a magnet. The compass needle interacts with Earth’s magnetic field, and the north pole of the compass needle points ...
... 1. If two magnets are attracting each other, what do you know about the poles? a. The attracting poles must be a south and a north. 2. How does a compass work? a. The compass needle is a magnet. The compass needle interacts with Earth’s magnetic field, and the north pole of the compass needle points ...
The Magnetic Field of a Permanent Magnet
... 2. How well does the inverse-cube model fit your experimental data? From the comparison, does your magnet show the magnetic field pattern of a dipole? 3. The computer adjusted the parameter A so the equation’s curve comes as close as possible to your data points. Relating the parameter A to the fiel ...
... 2. How well does the inverse-cube model fit your experimental data? From the comparison, does your magnet show the magnetic field pattern of a dipole? 3. The computer adjusted the parameter A so the equation’s curve comes as close as possible to your data points. Relating the parameter A to the fiel ...
Even if the forces acting on a body are balanced in
... - increasing the strength of the magnetic field - increasing the size of the current. The direction of the force is reversed if either the direction of the current or the direction of the magnetic field is reversed – so you must switch the battery connections round or turn the magnet round A coil of ...
... - increasing the strength of the magnetic field - increasing the size of the current. The direction of the force is reversed if either the direction of the current or the direction of the magnetic field is reversed – so you must switch the battery connections round or turn the magnet round A coil of ...
Magnetic field of magnets Interaction between magnetic poles: like
... which go from a north pole (N-pole) round to a south pole (S-pole). The direction of the field line gives the direction of the magnetic force acting on a north pole. The point at which the magnetic fields cancel each other out is called a neutral point. ...
... which go from a north pole (N-pole) round to a south pole (S-pole). The direction of the field line gives the direction of the magnetic force acting on a north pole. The point at which the magnetic fields cancel each other out is called a neutral point. ...
The Physics of Magnetic Resonance Imaging
... The external magnetic field is usually provided by large super conducting magnets operating at –269 o C and giving a field of 2T. The change in the remitted signal depends on the number of hydrogen nuclei present in the volume of the body examined. Magnetic resonance imaging (MRI) was first used in ...
... The external magnetic field is usually provided by large super conducting magnets operating at –269 o C and giving a field of 2T. The change in the remitted signal depends on the number of hydrogen nuclei present in the volume of the body examined. Magnetic resonance imaging (MRI) was first used in ...
Attention Graduate Students Introduction to Plasma Physics Physics
... time to circle the Earth--a few minutes. View from North Pole ...
... time to circle the Earth--a few minutes. View from North Pole ...
Bar Magnets
... magnetic field vector at any point in space is easily found by using a smaller magnet. This smaller magnet we call a compass. ...
... magnetic field vector at any point in space is easily found by using a smaller magnet. This smaller magnet we call a compass. ...
Jeopardy - Pleasant Valley School District
... electromagnet has more turns of wire and more current ...
... electromagnet has more turns of wire and more current ...
Teacher`s Notes
... 1. Students should discover that magnets stick to some things and not to others. These magnets are permanent magnets. They should discover that certain orientations of the two magnets will produce a repulsive force, while other orientations cause the two magnets to attract each other. They should re ...
... 1. Students should discover that magnets stick to some things and not to others. These magnets are permanent magnets. They should discover that certain orientations of the two magnets will produce a repulsive force, while other orientations cause the two magnets to attract each other. They should re ...
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... A moving charged particle, of charge q and with velocity vector v pointing out of the x-‐y-‐plane ( = plane of the drawing), is subject to a magnetic field, with the magnetic field v ...
... A moving charged particle, of charge q and with velocity vector v pointing out of the x-‐y-‐plane ( = plane of the drawing), is subject to a magnetic field, with the magnetic field v ...
adan (1)
... consequences of this force, and the relationships between them were first described by James Clerk Maxwell in the 1860s. The physical description of electromagnetism has since been combined with quantum mechanics into the theory of quantum. The electromagnetic force is about 1036times as strong as t ...
... consequences of this force, and the relationships between them were first described by James Clerk Maxwell in the 1860s. The physical description of electromagnetism has since been combined with quantum mechanics into the theory of quantum. The electromagnetic force is about 1036times as strong as t ...
Magnetic field
... electron causes it to act like tiny magnets. • In many materials the electrons is paired with another and the magnetic effects mostly cancel each other • Other materials have one or more unpaired electron and this unpaired electron produces magnetic fields • In few materials the unpaired electrons m ...
... electron causes it to act like tiny magnets. • In many materials the electrons is paired with another and the magnetic effects mostly cancel each other • Other materials have one or more unpaired electron and this unpaired electron produces magnetic fields • In few materials the unpaired electrons m ...
Magnet
A magnet (from Greek μαγνήτις λίθος magnḗtis líthos, ""Magnesian stone"") is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include iron, nickel, cobalt, some alloys of rare earth metals, and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of magnetism.Ferromagnetic materials can be divided into magnetically ""soft"" materials like annealed iron, which can be magnetized but do not tend to stay magnetized, and magnetically ""hard"" materials, which do. Permanent magnets are made from ""hard"" ferromagnetic materials such as alnico and ferrite that are subjected to special processing in a powerful magnetic field during manufacture, to align their internal microcrystalline structure, making them very hard to demagnetize. To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. ""Hard"" materials have high coercivity, whereas ""soft"" materials have low coercivity.An electromagnet is made from a coil of wire that acts as a magnet when an electric current passes through it but stops being a magnet when the current stops. Often, the coil is wrapped around a core of ""soft"" ferromagnetic material such as steel, which greatly enhances the magnetic field produced by the coil.The overall strength of a magnet is measured by its magnetic moment or, alternatively, the total magnetic flux it produces. The local strength of magnetism in a material is measured by its magnetization.