Magnetism I Name: A proton moves with a speed of 1.00 x 105 m/s
... moves northward, no magnetic force acts on it. (a) What is the direction of the magnetic field, and (b) what is the strength of the magnetic force when the proton moves eastward? (c) Calculate the gravitational force on the proton and compare it with the magnetic force. Compare it also with the elec ...
... moves northward, no magnetic force acts on it. (a) What is the direction of the magnetic field, and (b) what is the strength of the magnetic force when the proton moves eastward? (c) Calculate the gravitational force on the proton and compare it with the magnetic force. Compare it also with the elec ...
Astronomy 311: Magnetism • Atoms consist of protons and neutrons
... • So a lump of liquid iron could by chance condens slowly so that it becomes solid with all the atoms lined up in terms of spin magnetic moments. This is a permanent magnet. • Heating this lump to its Curie temperature destroys the alignment of the spin magnetic moments. • So a planetssimal forms, i ...
... • So a lump of liquid iron could by chance condens slowly so that it becomes solid with all the atoms lined up in terms of spin magnetic moments. This is a permanent magnet. • Heating this lump to its Curie temperature destroys the alignment of the spin magnetic moments. • So a planetssimal forms, i ...
Are Electricity and Magnetism Related? 1 - WW
... The north pole of a bar magnet is brought near the north pole of another bar magnet. 5. The north pole of a bar magnet is brought near the south pole of another bar magnet. 6. A charged object is brought near the north pole of a bar magnet. 7. A charged object is brought near the south pole of a bar ...
... The north pole of a bar magnet is brought near the north pole of another bar magnet. 5. The north pole of a bar magnet is brought near the south pole of another bar magnet. 6. A charged object is brought near the north pole of a bar magnet. 7. A charged object is brought near the south pole of a bar ...
Magnetic Art
... magnetic field: a field of force that exists around a magnet or a current-carrying conductor. magnetic domains: very small (1 to 0.1 mm) magnetized regions of a ferromagnetic substance. In a strong magnetic field, all the domains are lined up in the same direction as the field. magnetic: materials t ...
... magnetic field: a field of force that exists around a magnet or a current-carrying conductor. magnetic domains: very small (1 to 0.1 mm) magnetized regions of a ferromagnetic substance. In a strong magnetic field, all the domains are lined up in the same direction as the field. magnetic: materials t ...
LAB: Magnetism
... A bar magnet has two poles: north and south. We call such a magnet a dipole since it has two poles, commonly labeled North and South. Breaking a magnet in two does not produce two isolated poles; each fragment still has two poles. Similarly, two magnets together still exhibit only two poles. Since t ...
... A bar magnet has two poles: north and south. We call such a magnet a dipole since it has two poles, commonly labeled North and South. Breaking a magnet in two does not produce two isolated poles; each fragment still has two poles. Similarly, two magnets together still exhibit only two poles. Since t ...
Electric Potential - McMaster Physics & Astronomy Outreach
... Imagine a little circuit with an electron moving at a distance r from the nucleus of an atom. Combining these, we can show that: e This is the magnetic moment of an ...
... Imagine a little circuit with an electron moving at a distance r from the nucleus of an atom. Combining these, we can show that: e This is the magnetic moment of an ...
Electric Motors
... • Simply put, an electric motor converts electrical energy into mechanical energy (work) • They operate through interacting magnetic fields and current-carrying conductors to produce a force • (This might sound familiar) ...
... • Simply put, an electric motor converts electrical energy into mechanical energy (work) • They operate through interacting magnetic fields and current-carrying conductors to produce a force • (This might sound familiar) ...
The atom in magnetic field
... The unperturbed energy level is characterized by kLSJ, the spin-orbit coupling is not broken. The interaction with the magnetic field in this case is the ...
... The unperturbed energy level is characterized by kLSJ, the spin-orbit coupling is not broken. The interaction with the magnetic field in this case is the ...
File
... A field model can be used to explain how 2 objects exerting (applying) forces on each other without touching. When a second object is placed in this region, the field exerts a force on the object and can cause the object to change motion. ______________ Field – Region where ______________ Field ...
... A field model can be used to explain how 2 objects exerting (applying) forces on each other without touching. When a second object is placed in this region, the field exerts a force on the object and can cause the object to change motion. ______________ Field – Region where ______________ Field ...
Lesson 2: Magnetism
... used to find magnetite in Sweden in the Middle Ages, making the magnetic method the oldest of all applied geophysical techniques. This method of magnetic prospecting for ores was used extensively for iron mining up until the early decades of the twentieth century. However, the dip circle is not a se ...
... used to find magnetite in Sweden in the Middle Ages, making the magnetic method the oldest of all applied geophysical techniques. This method of magnetic prospecting for ores was used extensively for iron mining up until the early decades of the twentieth century. However, the dip circle is not a se ...
MAGNETISM
... mysteriously attracted to a rock.) This rock was a naturally occurring magnetic rock called lodestone. • Show students a piece of magnetite, and show them that a small magnet is attracted to it. • The mariners compass was the first important magnetic device. It is thought to have come from the Chine ...
... mysteriously attracted to a rock.) This rock was a naturally occurring magnetic rock called lodestone. • Show students a piece of magnetite, and show them that a small magnet is attracted to it. • The mariners compass was the first important magnetic device. It is thought to have come from the Chine ...
Magnetic separation
... layer on a piece of paper • Cover the hand magnet in weighing paper and pass over the sample • Set the magnet of a second piece of weighing paper, hold the first down and remove the magnet • Do not allow sample to contact the magnet directly as it is very difficult to remove. ...
... layer on a piece of paper • Cover the hand magnet in weighing paper and pass over the sample • Set the magnet of a second piece of weighing paper, hold the first down and remove the magnet • Do not allow sample to contact the magnet directly as it is very difficult to remove. ...
Figure 23-1 Magnetic Induction
... If the current in the primary circuit is constant, then the current in the secondary circuit is zero. When the magnetic field in the secondary circuit increases the current flows in one direction, and when the magnetic field decreases the current flows in the opposite direction. The magnitude of ...
... If the current in the primary circuit is constant, then the current in the secondary circuit is zero. When the magnetic field in the secondary circuit increases the current flows in one direction, and when the magnetic field decreases the current flows in the opposite direction. The magnitude of ...
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.