PPT-Charged Particle Trajectories in Earth’s Magnetic Field

Sarah Arveson Magnetism A charged particle will experience a force when placed in a magnetic field and given an initial velocity This is given by the Lorenz force where q is the charge of the particle in Coulombs m is the mass of the particle in kilograms v is velocity in meters per second and B is the magnetic field in . Physics 2415 Lecture 15. Michael Fowler, . UVa. Today’s Topics. Force on a charged particle moving in a magnetic field. Path of a charged particle moving in a magnetic field. Torque on a current loop in a magnetic field, magnetic dipole moment. Consider a uniform magnetic field into the board, with conducting rod moving through it:.  . + side. - side. Charges will move. If part of a circuit, can generate a current!. Which direction is the current through the resistor?. . Circulating Charges . (Charge +q in a uniform magnetic field). Since the particle is tracing out a circle of radius of r, we could calculate the time it takes to the particle to undergo one full revolution.. to the left. to the right. towards the top of the screen. towards the bottom of the screen. into the screen. out of the screen. none of the above. What must the sign of the charged particle be to satisfy the resulting force due to the magnetic field?. Textbook Sections 22-1 – 22-3, 22-8 . Physics 1161: Lecture 10. S N. S N. S N. 3. 2. 1. Which drawing shows the correct field lines for a bar magnet?. . Dr. Phillip C. Anderson. W. B. Hanson Center for Space Sciences. University of Texas at Dallas. What is Space Weather?. The conditions and processes occurring in space which have the potential to affect the near Earth environment. . Positive. Negative. It can’t happen!. The magnitude of an electric field due to a point charge . q. at a distance . r. away depends on the strength of the charge of a test particle. True. False. Positively charged . In this final session we will examine several evidences from the earth that show that it cannot be billions of . years old, and that line up with the earth being young. Sodium levels in the ocean. This is one of the oldest methods around . Magnetic Forces. Objectives: . FLASHBACK. FLASHBACK: Sketch a stress-strain graph for a malleable materials and label a) the limit of proportionality b) the elastic limit c) the ultimate tensile strength d) the breaking point. ~Magnetosphere. Earth’s Magnetic Field. The Earth acts like it has a giant bar magnet buried in it.. The magnetic field of the Earth is caused by convections currents of the molten iron and nickel interior of the Earth. 21. History of Magnetism . In 1269, Pierre de Maricourt of France found that the directions of a needle near a spherical natural magnet formed lines that encircled the sphere and passed through two points diametrically opposite each other, which he called the poles of the magnet. Subsequent experiments showed that every magnet, regardless of its shape, has two poles, called North (N) and (S) poles, that exert forces on other magnetic poles similar to the way electric charges exert forces on one another. That is, like poles (N-N or S-S) repel each other, and opposite poles (N-S) attract each other. Two poles, called . north. and . south. Like poles repel each other and unlike poles attract each other. Similar to electric charges. Magnetic poles cannot be isolated. If a permanent magnet is cut in half repeatedly, it will still have a north and a south pole. electrophoretic. mobility, Techniques of paper, gel, capillary electrophoresis, applications. Dr. NISHA SHARMA. , . UNIVERSITY INSTITUTE OF PHARMACY C.S.J.M. UNIVERSITY, KANPUR. nishasharma@csjmu.ac.in. the Earth's magnetic field at a given location. Objetive. The . objective of the activity is to measure the magnetic field of the Earth . an . a given . area. The relation . between . maximum . and minimum .