Lab 1 1. The white charge producer has a positive (+) polarity. The blue charge producer has a negative (-) polarity. 2. The positive charge builds significantly then remains as the charge producer is removed. 3. The negative charge builds significantly then remains as the charge producer is removed. 4. When the white charge producer is lowered then removed from the ice pail with out touching the positive charge builds then drops when the charger is removed. 5. When the ice pail
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they are convertible into shares‚ when such an issue at a discount would be an invitation to evade the rule that shares may not be issued at a discount (Mosly v. Koffyfontein [1904] 2 Ch 108). The lender may wish to secure his position by taking a charge over the property of the company‚ that is‚ creating a legal relationship between himself and the company which will ensure he is paid in priority at least to some of the other claimants against the company. 15.1 Debenture-holder’s Receiver
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Gauss’s Law Multiple Choice 1. Two charges of 15 pC and –40 pC are inside a cube with sides that are of 0.40-m length. Determine the net electric flux through the surface of the cube. a. +2.8 N ( m2/C b. –1.1 N ( m2/C c. +1.1 N ( m2/C d. –2.8 N ( m2/C e. –0.47 N ( m2/C 2. The total electric flux through a closed cylindrical (length = 1.2 m‚ diameter = 0.20 m) surface is equal to –5.0 N ( m2/C. Determine the net charge within the cylinder. a. –62
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Dispersion and the speed of light “So far as problems involving light are concerned‚ the electrons (in atoms) behave as though they were held by springs”.Feynman “In a microscopic but otherwise classical analysis‚ the electric field in electromagnetic radiation accelerates electrons held by springs in the atoms of a piece of glass‚ and these accelerated electrons re-radiate in all directions. The observed light is the superposition of the electric (and magnetic) fields of the incoming
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a) Two point of charges of opposite sign and same magnitude 3.5 μC are separated by a distance of 5 cm. Find (i) the magnitude and direction of the electric field strength‚ E at the midpoint between the charges. (ii) the magnitude and direction of the force F on an electron placed at the midpoint. Answer: i) E net = 1.008x108 N/C toward the –ve charge ii) F net = 1.6128x10-11 N toward +ve charge Question 2
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force between two stationary charges is directly proportional to the product of the charges and inversely to the square of the distance between them. Coulomb’s law tells us that the force between two charges depends (1) linearly on the strength of each charge‚ and (2) inversely on the square of the distance between them. Mathematically we would write this as . Procedures Part1 Begin by removing the right side guide block and setting it aside. Inductively charge the sphere attached to the
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Electrical Charges: Electrical charges come as plus or minus. Like charges repel‚ unlike charges attract. Electrons and protons have‚ to fantastic accuracy‚ equal and opposite charges. Quarks have 1/3 the electron charge but are never seen alone! In wires electrons do the moving to carry electrical current. In solutions or plasmas there can be positive charge carriers‚ ions or protons. Although the signal to tell electrons to move in wires travels at about 2/3 the speed of light
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Name: Lab 201: Electric Field by Point Charges Section: 121A-H02 Date: February 8‚ 2012 Objective: To compute electric field and corresponding field lines caused by point charges using MATLAB. Theoretical Background: -electrons are negative‚ protons are positive -magnitude of force between A and B is: ‚ is 8.98755E9. -electric field is the region around a charged object -strength of electric field: = -electric field lines are used to visually show the field Procedure: Our
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simulation related to work and energy? They are like contour lines on a map which trace lines of equal altitude. 1) Turn on “Show Numbers” 2) Place a positive 1 nano-coulomb charge near the center of the screen. 3) In the lower left of the screen is a meter for indicating electric potential‚ in volts‚ created by the charge that you introduced. Record the voltage and turn on “Plot”. 3.7 V 4) This line is much like a line on a geologic topo map. Explain the similarity. The similarity I notice is
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Inside Magnetism The Atom: Definitions: Atom: the smallest particle of an element Element: basic substances that make up all matter. Nucleus: center region of the atom Protons: particle that is positive Neutron: Particle that has no charge Electron: particle that is negative A spinning electron produces a magnetic field that makes the electron behave like a tiny magnet in an atom. Magnetic Domains: Magnetic Domain: grouping of atoms that have their magnetic feilds aligned In a
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