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This problem is inspired by the Stern-Gerlach experiments with neutrons. The mag- netic moment of a neutron is 9.6623 x 10-2 in SI units, and its mass is m 1.6749 x 10-27 kg. A collimated beam of neutrons of energy 1 eV is injected along the x axis, in a region where the magnetic field varies along y as e) Determine the length L needed for neutrons with up and down (parallel and anti- parallel to B respectively) magnetic moments...
4-7. (a) An element of wire of oriented length dil is moving with velocity u in a mag- netic field B. Show that the motional EMF developed in this element is given by (b) A conducting spherical shell of radius a and negligible thickness rotates with angular velocity ω ωez, în a uniform magnetic field described by B-Boer Calculate the EMF developed between one pole and a point on the equatorial circle. 4-7. (a) An element of wire of oriented...
The human nervous system is an electric system. In particular, our brains produce a mag- netic field of approximately B = 3pF. The currents responsible for this field are rather complicated, and not easy to map. Let us, however, estimate the size of theses currents. Model the brain’s electric network as a single circuit. Estimate the size of this circuit by measuring your head’s circumference, and compute the current in your brain
E16D.1 Consider a circular loop of radius R that is expand- ing at a rate of dR/dt in a static and uniform magnetic field B that is perpendicular to the loop's face. Since the mag- netic field is static and uniform in every frame of reference, Faraday's law ХЕ + дв/at 0 tells us that the electric field in any frame in this situation must have zero curl and therefore cannot drive a current around the loop. (a) At a...
mainly just looking for clarification of part c) a= cos theta t / cos theta i , b=sin theta i/ sin theta t 5. A plane electrom netic wave is obliquely incident upon an infinite plane boundary two dielectrics with refractive indices, permittivities and permeabilities m. ει, μι and respectively. In terms of the angles of incidence, O, and refraction, e, define n2-E2, μ2 sin θ sin6, (a) State succinctly what assumptions have been made about the materials to write...
Draw the kinetic and the thermodynamic addition products formed when one equivalent of HBr reacts with the following compound. (Draw a single product for each. Ignore stereochemical or chiral isomers.) netic product: H3 HBr one equivalent hermodynamic product:
VIll. The below figure shows a conductor of length L-0.5 m moving at a velocity ofv-10 m/s into the ia㎎netic field of B = 1.2 Tesla directed to the right as shown. If a voltage is induced, show its polarity on the wire and derive its value. Velocity of wire is into page
9. A 30-turn circular coil of radius 4 cm and resistance 1 Ω is placed in a magnetic field directed perpendicu- lar to the plane of the coil. The magnitude of the mag- netic field varies in time according to the expression B 0.01t+0.04t2, where t is in s and B is in T. Calcu- late the induced emf in the coil at t 5 s.
BoNUs: Geodynamo The mass of the earth is M = 6.0 , 1024 kg and its radius is R = 6.4 . 106 m. (a) Estimate the rotational kinetic energy of the earth, in joules (J) converted to electrical power, how long could it supply energy to the human race, assuming our power consumption netic remained constant? Report your answer in seconds and in years