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(a) Show by applying Ampere's circuital law that the magnetic field associated with a long straight, current-carrying wire is given by Bφ = µ0I/(2πr), where the subscript φ denotes the φ-component in the circular cylindrical coordinate system,µ0 is the free-space permeability, I is the current carried by the wire, and r is the radius from the current carrying wire. What is the net force on the wire due to the interaction of the B-field (produced by the current I) and the current I?
(b) A magnetic force exists between two adjacent, parallel, current-carrying wires. Let I1 and I2 be the currents carried by the wires and r the separation between them. Use the result of part (a) to find the force between the wires. Discuss the nature of the force when the wires carry currents in the same direction, and in opposite directions.
Using the method outlined for steepest descent in Eqs. (961 to (98) and presented in Fig. 11-12, what would be the minimum value of C along the first line of steepest descent if the initial point had been chosen arbitrarily as x = 2 and y = 3 with..
For parts (a), (c), (d), (f), and (h) of Problem 10.20, determine the approximate percentages of the microconstituents that form. (a) Rapidly cool to 250(C (480(F), hold for 103 s, then quench to room temperature.
Compute the power factor for zero voltage regulation on full load.
Lay out the flow sheet of the process and justify your choice based on the characteristics of the source water (note: if data not available, you can make your estimations based on other similar sites or commensense); (20%)
A mixture of 25% ammonia gas and 75 % air ( dry basis) is passed upward through a vertical scrubbing tower , to the top of which water is pumped. Scrubbed gas containing 0.5 % ammonia leaves the top of the tower, and an aqueou..
1. find laplace transforms of the following functions where a b and c are constants.a. a bt ct2b. asin2tc.nbsp e-3t2.
In terms of heat treatment and the development of microstructure, what are two major limitations of the iron-iron carbide phase diagram?
Look up the boiling point of propane. What disadvantages are there to using propane instead of gasoline as a fuel?
Zirconium is one of the few metals that retains its structural integrity upon exposure to radiation. The fuel rods in most nuclear reactors therefore are often made of zirconium.
question 1a a receptionist who has been working in a large accountancy firm for eleven months has been complaining of
Name the microstructural products of eutectoid iron-carbon alloy (0.76 wt% C) specimens that are first completely transformed to austenite, then cooled to room temperature at the following rates:
Use tabulated thermodynamic data to find ΔG° for this reaction at the standard temperature of 25°C. Then calculate the calculate ΔG°1000 for this process when it occurs at 1000 K.
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