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A -6-nC point charge is located at the center of a conducting spherical shell. The shell has an inner radius of 2 m, an outer radius of 4 m, and a charge of +7 nC. (Let the radially outward direction be positive.)
(a) What is the electric field at r = 1 m?
(b) What is the electric field at r = 3 m?
(c) What is the electric field at r = 6 m?
(d) What is the surface charge distribution, s, on the outside surface of the shell?
Using the symbols we've learned in class (standard symbols used universally), draw a schematic showing the circuit of a 12-V car battery (represented as a voltage source connected to a light bulb (represented as a resistor).
A series-connected dc motor has RF+RA = .6 ohmns and draws IA = 40 A from the dc source voltage VT = 220 V, while running at 900 rpm. What is the speed for IA = 20 A Assume a linear relationship between IA and phi.
A lossless transmission line, with characteristic impedance of 50Ω and eletrical length of l=0.27λ, is terminated by load impedance 40-j25Ω. Determine voltage reflection coefficient.
A 3000-lb automobile is driven down a 5 degree incline at a speed of 50mi/h when the brakes are applied, causing a total braking froce of 1200 lb to the applied automoble. Determine the distance traveled by automobile before it come to a stop.
What would be the minimum sample rate needed to adequately acquire an EKG signal Note that this problem is not as simple as it appears to be, because while the fundamental frequency may be relatively low, artifacts in the EKG may be at frequencies..
The first stage is a transconductance amplifier with an input resistance of 2k ohms, an output resistance of 100k and a gm=0.002A/V. The second stage is a voltage amplifier with an input resistance of 5k, an output resistance of 18 ohms and a volt..
a potential divider has formed from 1000 ohms variable resistance. the intention is to drop 12 volts from an automobile battery to 9 volts. When the radio device was attached the voltage drops 6.1 volts.
Fins are used to enhance the cooling of an object. Fins are manufactured in a wide variety of shapes and sizes, and for a mass-product, it may be beneficial to optimize the shape of the fin. find the dimensions of the fin that achieve a maximum
a) Design a minimum two-level NOR-gate network to realize the above function. b) Design a minimum three-level NOR-gate network to realize the above function.
A 3-phase load on a bus is metered at 3,200 kW with a 0.83 lagging power factor. What is the amount of capacitive reactive power that will correct the system power factor to 0.95 Draw all power triangles and show all variables, Q, P, S, pf.
Which FET operates in both Depletion and Enhanced mode and how do you recognize the mode by just looking at the Family of Drain Characteristic Curves
Ten multimode glass fibers (n1 = 1.48, n2 = 1.45) are spliced together. Each fiber is 2 km long and has a loss rate 2-dB/km. Each splice adds 1 dB of loss. If the output power of the source is 7 dBm and radiates uniformly in a 60 degree half cone
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