Section 21.1 Magnets and Magnetic Fields
... © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. ...
... © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. ...
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L 28 Electricity and Magnetism [5]
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
Lecture 8 Magnetic field
... Every magnet, regardless of its shape, has two poles Called north and south poles Poles exert forces on one another ...
... Every magnet, regardless of its shape, has two poles Called north and south poles Poles exert forces on one another ...
Ferro-fluid
... This is best done as a demonstration at the front of the room o Ask the students: Why would a weightless surfactant make a more ‘reactive’ ferro fluid? Because the magnetic particles move most easily through a lighter, less viscous medium, but they also need to be supported – water will not supp ...
... This is best done as a demonstration at the front of the room o Ask the students: Why would a weightless surfactant make a more ‘reactive’ ferro fluid? Because the magnetic particles move most easily through a lighter, less viscous medium, but they also need to be supported – water will not supp ...
Chapter-36-four-square-questions_-answer
... Q6: How can spinning electrons work together or work against each other? A pair of spinning electrons can work together by spinning in the SAME direction which results in a stronger magnet. They can work against each other by spinning in opposite directions which cancels out their magnetic field. Q7 ...
... Q6: How can spinning electrons work together or work against each other? A pair of spinning electrons can work together by spinning in the SAME direction which results in a stronger magnet. They can work against each other by spinning in opposite directions which cancels out their magnetic field. Q7 ...
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L 28 Electricity and Magnetism [5]
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
EECS 215: Introduction to Circuits
... dH is in the r–z plane , and therefore it has components dHr and dHz z-components of the magnetic fields due to dl and dl’ add because they are in the same direction, but their r-components cancel Hence for element dl: ...
... dH is in the r–z plane , and therefore it has components dHr and dHz z-components of the magnetic fields due to dl and dl’ add because they are in the same direction, but their r-components cancel Hence for element dl: ...
![L 28 Electricity and Magnetism [5]](http://s1.studyres.com/store/data/001468655_1-12c2495c0c6eb4c679cede08941ae4d1-300x300.png)
L 28 Electricity and Magnetism [5]
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
![L 28 Electricity and Magnetism [5]](http://s1.studyres.com/store/data/001652997_1-39b0ac23a2b50856ca07ac04d66ac502-300x300.png)
L 28 Electricity and Magnetism [5]
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
... The earth is a big magnet • The earth’s north geographic pole is the south pole of a big magnet. • A compass needle is attracted to the earth’s north geographic pole • The earth’s magnetism is due to currents flowing in The magnetic north pole is its molten core (not entirely inclined about 14° fro ...
5. How does a magnet`s north pole behave when brought near
... 5. How does a magnet’s north pole behave when brought near another north pole? Near a magnet’s south pole? Two magnetic north poles repel each other. A magnetic north and a magnetic south pole attract each other. 6. How can the behavior of two magnets show the presence of a magnetic force? When unli ...
... 5. How does a magnet’s north pole behave when brought near another north pole? Near a magnet’s south pole? Two magnetic north poles repel each other. A magnetic north and a magnetic south pole attract each other. 6. How can the behavior of two magnets show the presence of a magnetic force? When unli ...
Magnetic Jeopardy
... magnetic field is due north at this point and has a strength of 0.14 104 T. What is the direction of the force on the wire? ...
... magnetic field is due north at this point and has a strength of 0.14 104 T. What is the direction of the force on the wire? ...
Electricity and Magnetism
... Have the property of magnetism. Ferromagnetic materials (ie iron): Spin of electrons line up in small regions called domains. Magnetic domains can align in a given direction to allow a magnet to induce magnetism. Lines of magnetic flux: the field lines of a magnet (similar to electric field lines) ...
... Have the property of magnetism. Ferromagnetic materials (ie iron): Spin of electrons line up in small regions called domains. Magnetic domains can align in a given direction to allow a magnet to induce magnetism. Lines of magnetic flux: the field lines of a magnet (similar to electric field lines) ...
Lecture 23: Jupiter Solar System Jupiter`s Orbit
... •Jupiter’s atmosphere shows very complex patterns of motion •There are bands, clouds, and storms •The bands display shear flow •The Great Red Spot is a storm a few times the size of Earth that has lasted for hundreds of years •The complex motions are explained by the combination of solar heating, th ...
... •Jupiter’s atmosphere shows very complex patterns of motion •There are bands, clouds, and storms •The bands display shear flow •The Great Red Spot is a storm a few times the size of Earth that has lasted for hundreds of years •The complex motions are explained by the combination of solar heating, th ...
magnetism
... relative motion of magnet and the coil? Q. 38. what will be the frequency of an A.C current if its direction changes after every a)0.01s? b) 0.02s Q. 39. How will the magnetic field intensity at the centre of a circular coil carrying current change, if the current through the coil is doubled / Q. 40 ...
... relative motion of magnet and the coil? Q. 38. what will be the frequency of an A.C current if its direction changes after every a)0.01s? b) 0.02s Q. 39. How will the magnetic field intensity at the centre of a circular coil carrying current change, if the current through the coil is doubled / Q. 40 ...
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MagLev_Exam_and_Key
... expelled from the superconductor when immediately reverses when Tc is Tc is reached. reached. ...
... expelled from the superconductor when immediately reverses when Tc is Tc is reached. reached. ...
Do now! - MrSimonPorter
... When a magnetic material is close to a magnet, it becomes a magnet itself magnet S ...
... When a magnetic material is close to a magnet, it becomes a magnet itself magnet S ...
Magnetosphere of Jupiter
The magnetosphere of Jupiter is the cavity created in the solar wind by the planet's magnetic field. Extending up to seven million kilometers in the Sun's direction and almost to the orbit of Saturn in the opposite direction, Jupiter's magnetosphere is the largest and most powerful of any planetary magnetosphere in the Solar System, and by volume the largest known continuous structure in the Solar System after the heliosphere. Wider and flatter than the Earth's magnetosphere, Jupiter's is stronger by an order of magnitude, while its magnetic moment is roughly 18,000 times larger. The existence of Jupiter's magnetic field was first inferred from observations of radio emissions at the end of the 1950s and was directly observed by the Pioneer 10 spacecraft in 1973.Jupiter's internal magnetic field is generated by electrical currents in the planet's outer core, which is composed of liquid metallic hydrogen. Volcanic eruptions on Jupiter's moon Io eject large amounts of sulfur dioxide gas into space, forming a large torus around the planet. Jupiter's magnetic field forces the torus to rotate with the same angular velocity and direction as the planet. The torus in turn loads the magnetic field with plasma, in the process stretching it into a pancake-like structure called a magnetodisk. In effect, Jupiter's magnetosphere is shaped by Io's plasma and its own rotation, rather than by the solar wind like Earth's magnetosphere. Strong currents in the magnetosphere generate permanent aurorae around the planet's poles and intense variable radio emissions, which means that Jupiter can be thought of as a very weak radio pulsar. Jupiter's aurorae have been observed in almost all parts of the electromagnetic spectrum, including infrared, visible, ultraviolet and soft X-rays.The action of the magnetosphere traps and accelerates particles, producing intense belts of radiation similar to Earth's Van Allen belts, but thousands of times stronger. The interaction of energetic particles with the surfaces of Jupiter's largest moons markedly affects their chemical and physical properties. Those same particles also affect and are affected by the motions of the particles within Jupiter's tenuous planetary ring system. Radiation belts present a significant hazard for spacecraft and potentially to human space travellers.