Magnetic Levitation
... But, if I flip one of the magnets over and I try and push the two south poles together, they resist and push apart. They never connect to each other, no matter how hard I push. Take a look at the levitating pencil again. I lined up all the south poles so they would repel each other, which makes the ...
... But, if I flip one of the magnets over and I try and push the two south poles together, they resist and push apart. They never connect to each other, no matter how hard I push. Take a look at the levitating pencil again. I lined up all the south poles so they would repel each other, which makes the ...
Magnetic stripes on the ocean floor: a lab simulation
... forming the ocean floor was a key piece of evidence convincing most geologists that the theory of plate tectonics was correct. This teacher demonstration shows how this works. There are two closely related activities which teachers may wish to tackle at the same time. These are: ...
... forming the ocean floor was a key piece of evidence convincing most geologists that the theory of plate tectonics was correct. This teacher demonstration shows how this works. There are two closely related activities which teachers may wish to tackle at the same time. These are: ...
∫ θ
... vector along the wire parallel to the current. Show that the magnetic moment for this current loop is IAz, where z is a unit vector perpendicular to the current loop and A is the area of the loop, πR2. Hint: Use cylindrical coordinates in this problem. 2. The potential energy, U, for a magnetic mome ...
... vector along the wire parallel to the current. Show that the magnetic moment for this current loop is IAz, where z is a unit vector perpendicular to the current loop and A is the area of the loop, πR2. Hint: Use cylindrical coordinates in this problem. 2. The potential energy, U, for a magnetic mome ...
Electromagnetism Cloze - Science
... the kinetic energy of water flowing downhill into electricity. ...
... the kinetic energy of water flowing downhill into electricity. ...
Magic Magnets
... Only a few substances have atoms in which the magnets line up their forces. When some metals are put in a magnetic field all of its atoms line up which is how the iron nail became a temporary magnet. Objects, like the iron nail, that become temporarily magnetized are made of ferromagnetic material. ...
... Only a few substances have atoms in which the magnets line up their forces. When some metals are put in a magnetic field all of its atoms line up which is how the iron nail became a temporary magnet. Objects, like the iron nail, that become temporarily magnetized are made of ferromagnetic material. ...
MAGNETany material that attracts iron and materials that contain
... MAGNETIC VAN ALLEN DECLINATION the BELTS 2 doughnut angle between geographic north and south to which a compass needle points ...
... MAGNETIC VAN ALLEN DECLINATION the BELTS 2 doughnut angle between geographic north and south to which a compass needle points ...
Notes: Magnetism
... Force of attraction or repulsion between various substances, especially those made of iron, nickel and cobalt; it is due to the motion of electric charges" Magnetic Field What is it? ...
... Force of attraction or repulsion between various substances, especially those made of iron, nickel and cobalt; it is due to the motion of electric charges" Magnetic Field What is it? ...
File - Science with Ms. C
... Know that magnetism is the force of ________________ _____ __________________of magnetic materials. Surrounding a magnet is a magnetic field that____________ ______ ____________ , a push or pull, without actually touching an object. Evidence of a magnetic field can be found in how the field af ...
... Know that magnetism is the force of ________________ _____ __________________of magnetic materials. Surrounding a magnet is a magnetic field that____________ ______ ____________ , a push or pull, without actually touching an object. Evidence of a magnetic field can be found in how the field af ...
MAGNETISM
... attracted by the field. Thus if you weigh a paramagnetic material in a magnetic field, it will be heavier than without the field. Most materials are diamagnetic, and get lighter in magnetic fields, because they are repelled by the field. So the easiest way to see if a material is magnetic is to weig ...
... attracted by the field. Thus if you weigh a paramagnetic material in a magnetic field, it will be heavier than without the field. Most materials are diamagnetic, and get lighter in magnetic fields, because they are repelled by the field. So the easiest way to see if a material is magnetic is to weig ...
Electric generator
... Electricity is supplied from a battery. The battery is connected to two brushes, two commutator rings and a coil of wire (armature) in a circuit. As electrons flow through the armature they create a magnetic field around the armature. The armature becomes a temporary magnet. This magnetic field ...
... Electricity is supplied from a battery. The battery is connected to two brushes, two commutator rings and a coil of wire (armature) in a circuit. As electrons flow through the armature they create a magnetic field around the armature. The armature becomes a temporary magnet. This magnetic field ...
S3P2. Students will investigate magnets and how they affect other
... • A Temporary Magnet is an object that loses its magnetism after a short time. • Some metal objects can be made into a magnet. • A paper clip can be made into a temporary magnet buy rubbing it with a magnet. • It will then be able to attract other metal objects like staples. ...
... • A Temporary Magnet is an object that loses its magnetism after a short time. • Some metal objects can be made into a magnet. • A paper clip can be made into a temporary magnet buy rubbing it with a magnet. • It will then be able to attract other metal objects like staples. ...
Chapter 21 Magnetism
... Early Uses of Magnetism • Thousands of years ago, people noticed that a mineral called magnetite attracted other pieces of magnetite and bits of iron. • When pieces of iron were free to turn, one end pointed north north. • These might have been the first compasses compasses. • The compass was an im ...
... Early Uses of Magnetism • Thousands of years ago, people noticed that a mineral called magnetite attracted other pieces of magnetite and bits of iron. • When pieces of iron were free to turn, one end pointed north north. • These might have been the first compasses compasses. • The compass was an im ...
t=0
... Example: A proton ( 1.60 1019 C, m 1.67 1027 kg) is placed in the uniform magnetic field directed along the x-axis with magnitude 0.500 T. Only the magnetic force acts on the proton. At t=0 the proton has velocity components vx 1.50 105 m / s, v y 0, vz 2.00 105 m / s. Find the radius ...
... Example: A proton ( 1.60 1019 C, m 1.67 1027 kg) is placed in the uniform magnetic field directed along the x-axis with magnitude 0.500 T. Only the magnetic force acts on the proton. At t=0 the proton has velocity components vx 1.50 105 m / s, v y 0, vz 2.00 105 m / s. Find the radius ...
Standard EPS Shell Presentation
... Decide whether two magnetic poles will attract or repel. Describe the magnetic field and forces around a permanent magnet. ...
... Decide whether two magnetic poles will attract or repel. Describe the magnetic field and forces around a permanent magnet. ...
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.