PHYS 221 Midterm Practice Summer 2012
... Consider a insulating sphere of radius R centered on the origin with total charge Q uniformly distributed throughout the volume of the sphere. What is the electric field E inside the sphere at a distance r from the origin? (i.e. r < R) HINT: Vsphere = 43 πr3 and Asphere = 4πr2 . ...
... Consider a insulating sphere of radius R centered on the origin with total charge Q uniformly distributed throughout the volume of the sphere. What is the electric field E inside the sphere at a distance r from the origin? (i.e. r < R) HINT: Vsphere = 43 πr3 and Asphere = 4πr2 . ...
... Two waves are interfering. A given point is reached by wave crests from one wave at the same time as by wave troughs from the other wave. The interference at that point is then said to be: DESTRUCTIVE CONSTRUCTIVE ...
... Two waves are interfering. A given point is reached by wave crests from one wave at the same time as by wave troughs from the other wave. The interference at that point is then said to be: DESTRUCTIVE CONSTRUCTIVE ...
The Third Electromagnetic Constant of an Isotropic Medium
... in the vacuum. The charges and currents of these particles can be fed into the equations of vacuum electrodynamics. The resulting equations, if solved, can describe all electromagnetic phenomena. In practice, however, this is not a viable approach because, as already commented, the number of charges ...
... in the vacuum. The charges and currents of these particles can be fed into the equations of vacuum electrodynamics. The resulting equations, if solved, can describe all electromagnetic phenomena. In practice, however, this is not a viable approach because, as already commented, the number of charges ...
hw06_solutions
... the Earth at an angle of 56.0° below a line pointing due north. If a 7.20-A clockwise current passes through the coil, (a) determine the torque on the coil, and (b) which edge of the coil rises up: north, east, south, or west? Solution (a) The torque is given by Eq. 20-10. The angle is the angle bet ...
... the Earth at an angle of 56.0° below a line pointing due north. If a 7.20-A clockwise current passes through the coil, (a) determine the torque on the coil, and (b) which edge of the coil rises up: north, east, south, or west? Solution (a) The torque is given by Eq. 20-10. The angle is the angle bet ...
Glossary of Terms Handout
... UV -- Ultraviolet (meaning "above violet") radiation. Electromagnetic radiation in the neighborhood of 100 nanometers wavelength. Velocity -- A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion. W -- Watt, a measure of electrical power equal to p ...
... UV -- Ultraviolet (meaning "above violet") radiation. Electromagnetic radiation in the neighborhood of 100 nanometers wavelength. Velocity -- A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion. W -- Watt, a measure of electrical power equal to p ...
Magnetic Field and Work
... Very quickly, equilibrium between electrostatic & magnetic forces is established and potential difference stops growing: V VH = vdrift Bw = "Hall Voltage" Fdown = qEinduced = q H Fup = qvdrift B w ¾ This type of experiment led to the discovery (E. Hall, 1879) that current in conductors is carried by ...
... Very quickly, equilibrium between electrostatic & magnetic forces is established and potential difference stops growing: V VH = vdrift Bw = "Hall Voltage" Fdown = qEinduced = q H Fup = qvdrift B w ¾ This type of experiment led to the discovery (E. Hall, 1879) that current in conductors is carried by ...
Runaway solutions and pre-acceleration
... equation is third order in time derivatives of position, so a solution is determined by initial position, velocity and acceleration. In terms of a(t) however it is first order, and can be solved with one undetermined constant. Given that solution, the position can be found given an initial position ...
... equation is third order in time derivatives of position, so a solution is determined by initial position, velocity and acceleration. In terms of a(t) however it is first order, and can be solved with one undetermined constant. Given that solution, the position can be found given an initial position ...
p265f
... illegible, incomplete, lacks proper accuracy of if methods are clearly indicated. Bonus Yes No. ___________________________________________________________________________ Multiple Choice (3 points each) _____ 1. ...
... illegible, incomplete, lacks proper accuracy of if methods are clearly indicated. Bonus Yes No. ___________________________________________________________________________ Multiple Choice (3 points each) _____ 1. ...
Document
... If I double m1, what happens to the force of gravity? If I triple m2, what happens to the force of gravity? If I double the distance between the masses, what happens to the force of gravity? If I halve the distance between the masses, what happens to the force of gravity? If I triple the distance, w ...
... If I double m1, what happens to the force of gravity? If I triple m2, what happens to the force of gravity? If I double the distance between the masses, what happens to the force of gravity? If I halve the distance between the masses, what happens to the force of gravity? If I triple the distance, w ...
Electromagnetism
Electromagnetism is a branch of physics which involves the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles. The electromagnetic force usually shows electromagnetic fields, such as electric fields, magnetic fields, and light. The electromagnetic force is one of the four fundamental interactions in nature. The other three fundamental interactions are the strong interaction, the weak interaction, and gravitation.The word electromagnetism is a compound form of two Greek terms, ἤλεκτρον, ēlektron, ""amber"", and μαγνῆτις λίθος magnētis lithos, which means ""magnesian stone"", a type of iron ore. The science of electromagnetic phenomena is defined in terms of the electromagnetic force, sometimes called the Lorentz force, which includes both electricity and magnetism as elements of one phenomenon.The electromagnetic force plays a major role in determining the internal properties of most objects encountered in daily life. Ordinary matter takes its form as a result of intermolecular forces between individual molecules in matter. Electrons are bound by electromagnetic wave mechanics into orbitals around atomic nuclei to form atoms, which are the building blocks of molecules. This governs the processes involved in chemistry, which arise from interactions between the electrons of neighboring atoms, which are in turn determined by the interaction between electromagnetic force and the momentum of the electrons.There are numerous mathematical descriptions of the electromagnetic field. In classical electrodynamics, electric fields are described as electric potential and electric current in Ohm's law, magnetic fields are associated with electromagnetic induction and magnetism, and Maxwell's equations describe how electric and magnetic fields are generated and altered by each other and by charges and currents.The theoretical implications of electromagnetism, in particular the establishment of the speed of light based on properties of the ""medium"" of propagation (permeability and permittivity), led to the development of special relativity by Albert Einstein in 1905.Although electromagnetism is considered one of the four fundamental forces, at high energy the weak force and electromagnetism are unified. In the history of the universe, during the quark epoch, the electroweak force split into the electromagnetic and weak forces.