Lect-1-2-Intro+SingleParticle
... – As particles bounce they will drift because of gradient and curvature drift motion. – As long as the magnetic field doesn’t change much in the time required to drift around a planet the magnetic flux B ndA inside the orbit must be constant. ...
... – As particles bounce they will drift because of gradient and curvature drift motion. – As long as the magnetic field doesn’t change much in the time required to drift around a planet the magnetic flux B ndA inside the orbit must be constant. ...
plate tectonics study guide
... used several lines of evidence to support his idea that the continents were once joined together in a supercontintent called Pangaea and have since moved away from one another: (1) the similarity in shape of the continents, as if they once fit together like the pieces of a jigsaw puzzle; (2) the pre ...
... used several lines of evidence to support his idea that the continents were once joined together in a supercontintent called Pangaea and have since moved away from one another: (1) the similarity in shape of the continents, as if they once fit together like the pieces of a jigsaw puzzle; (2) the pre ...
Into the page
... – how does the strength of the field vary with distance from the wire? – how does the field direction relate to the poles of the magnet? ...
... – how does the strength of the field vary with distance from the wire? – how does the field direction relate to the poles of the magnet? ...
Introduction to Plate Tectonics
... – rocks generally belong to two groups according to their magnetic properties • Normal: the magnetic minerals in the rock having the same polarity as that of the Earth's present magnetic field (North is North) • Reversed: the magnetic minerals in the rock having the opposite polarity as that of the ...
... – rocks generally belong to two groups according to their magnetic properties • Normal: the magnetic minerals in the rock having the same polarity as that of the Earth's present magnetic field (North is North) • Reversed: the magnetic minerals in the rock having the opposite polarity as that of the ...
Electricity and Magnetism
... Although we cannot see magnetic fields, we can detect them using iron filings. The tiny pieces of iron line up in the magnetic field. ...
... Although we cannot see magnetic fields, we can detect them using iron filings. The tiny pieces of iron line up in the magnetic field. ...
Chapter 4 Assignment GEarthOL
... a) Anchorage, Alaska b) New York, New York c) Miami, Florida d) Imperial, California Checkpoint 4.11, p. 92 #7: Inclination is determined for three lava flows preserved in a cliff as shown in the following image. What happened to the continent on which these rocks were formed? (Assume normal polarit ...
... a) Anchorage, Alaska b) New York, New York c) Miami, Florida d) Imperial, California Checkpoint 4.11, p. 92 #7: Inclination is determined for three lava flows preserved in a cliff as shown in the following image. What happened to the continent on which these rocks were formed? (Assume normal polarit ...
Basic Physical Principles of MRI
... MRI uses a combination of Magnetic and Electromagnetic Fields • NMR measures the net magnetization of atomic nuclei in the presence of magnetic fields • Magnetization can be manipulated by changing the magnetic field environment (static, gradient, and RF fields) • Static magnetic fields don’t chang ...
... MRI uses a combination of Magnetic and Electromagnetic Fields • NMR measures the net magnetization of atomic nuclei in the presence of magnetic fields • Magnetization can be manipulated by changing the magnetic field environment (static, gradient, and RF fields) • Static magnetic fields don’t chang ...
Department of Natural Sciences
... Alpha particles of charge q = + 2e and mass m = 6.60 x 10-27 kg are emitted by radioactive source at a speed of 1.60 x 107 m/s. a. What magnetic field strength would be required to bend them into a circular path of radius r = 0.250 m? r = (mV) / (qB) B = (mV) / (rq) B = (6.60 x 10-27 kg)(1.60 x 107 ...
... Alpha particles of charge q = + 2e and mass m = 6.60 x 10-27 kg are emitted by radioactive source at a speed of 1.60 x 107 m/s. a. What magnetic field strength would be required to bend them into a circular path of radius r = 0.250 m? r = (mV) / (qB) B = (mV) / (rq) B = (6.60 x 10-27 kg)(1.60 x 107 ...
Knight_ch34
... An electromagnetic wave is traveling in the positive y-direction. The electric field at one instant of time is shown at one position. The magnetic field at this position points ...
... An electromagnetic wave is traveling in the positive y-direction. The electric field at one instant of time is shown at one position. The magnetic field at this position points ...
ELECTRICITY AND MAGNETISM The magnetic field created by an
... • circuits can be carved into the surface • circuits are good conductors • very energy-efficient ...
... • circuits can be carved into the surface • circuits are good conductors • very energy-efficient ...
Answers for Student notes page
... The discovery that a magnet exerts a force on a current-carrying wire created much excitement. People began harnessing this force for useful purposes—electric meters and electric motors. ...
... The discovery that a magnet exerts a force on a current-carrying wire created much excitement. People began harnessing this force for useful purposes—electric meters and electric motors. ...
presentation source
... • Strength of the field is greatest at the poles. • Source of Magnetic Field: – Earth’s magnetic field is generated in the liquid outer core by convection currents. – Convection of metal generates an electrical current that creates magnetic field. ...
... • Strength of the field is greatest at the poles. • Source of Magnetic Field: – Earth’s magnetic field is generated in the liquid outer core by convection currents. – Convection of metal generates an electrical current that creates magnetic field. ...
Lect-1-2-Intro+SingleParticle
... – As particles bounce they will drift because of gradient and curvature drift motion. – As long as the magnetic field doesn’t change much in the time required to drift around a planet the magnetic flux B ndA inside the orbit must be constant. ...
... – As particles bounce they will drift because of gradient and curvature drift motion. – As long as the magnetic field doesn’t change much in the time required to drift around a planet the magnetic flux B ndA inside the orbit must be constant. ...
Evidence after wegener: seafloor spreading and
... • crust was younger by mid-ocean ridges and older further ...
... • crust was younger by mid-ocean ridges and older further ...
Earth's magnetic field
Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior to where it meets the solar wind, a stream of charged particles emanating from the Sun. Its magnitude at the Earth's surface ranges from 25 to 65 microteslas (0.25 to 0.65 gauss). Roughly speaking it is the field of a magnetic dipole currently tilted at an angle of about 10 degrees with respect to Earth's rotational axis, as if there were a bar magnet placed at that angle at the center of the Earth. Unlike a bar magnet, however, Earth's magnetic field changes over time because it is generated by a geodynamo (in Earth's case, the motion of molten iron alloys in its outer core).The North and South magnetic poles wander widely, but sufficiently slowly for ordinary compasses to remain useful for navigation. However, at irregular intervals averaging several hundred thousand years, the Earth's field reverses and the North and South Magnetic Poles relatively abruptly switch places. These reversals of the geomagnetic poles leave a record in rocks that are of value to paleomagnetists in calculating geomagnetic fields in the past. Such information in turn is helpful in studying the motions of continents and ocean floors in the process of plate tectonics.The magnetosphere is the region above the ionosphere and extends several tens of thousands of kilometers into space, protecting the Earth from the charged particles of the solar wind and cosmic rays that would otherwise strip away the upper atmosphere, including the ozone layer that protects the Earth from harmful ultraviolet radiation.