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An electric field is described in cylindrical coordinates as:
E=p'(1/p) [V/m]
where p' is rho vector and p is rho. Find the voltage drop Vab where a is the the point (1,0,0) and b is (2,pi/2,1). In the the description of these points, the cylindrical coordinate notation (p,phi,z) is used, where dimensions are in [m] and angles are in radians. Voltage drop is path independent.
Gold cost about $100 an ounce in 1971. In 2007, the cost of an ounce of gold is hovering around $800. compute the average price increase for gold.
At some instant, it goes into regenerative braking. Calculate the armature voltage va at that instant, if the current ia is not to exceed 10A in magnitude. Assume that the inertia is large and thus the speed changes very slowly.
Light of free-space wavelenth lambda_0= 0.87 micrometers is guided by a thin planar film of width d=2 micrometers and refractive index n_1=1.6 surrounded by a medium of refractive index n_2=1.4.
A resistive temperature sensor is modeled as R(T) = 100 +0.0039(T-25)+1.0x10^-5(T-25)^2 where T is in degrees C. Calculate the tempco and sensitivity at T = 50 degrees C.
Each of the capacitance units is built of 4 similar 100V capacitors. Determine the capacitance of each capacitor.
You have a laundry room where the following loads are connected to a 208V circuit: 2500W electric base board heater, 600W wash machine, 3600W dryer, and a 1000W iron. All loads are connected in parallel.
what size capacitor should be placed in series with the series combination of 800 ohms and 20mH to give an admittance whose magnitude is 1m/ohm at w=10k rads/s
A DSP system has a sampling frequency of 800 HZ. What is the maximum frequency of the analog signal so that the aliasing would not occur
Write at least one paragraph explaining why the power factor of the motor changes as the rotor mechanical speed changesin the induction motor. evaluate when the machine is operating in motor mode or generator mode.
For a unity feedback system with forward path transfer function (Open-loop transfer function) as follows G(s) = 5000/ s(s + 75) derive closed-loop transfer function
A 5 Kg silicon ingot is doped with 10^16 cm^-3 phosphorous atoms. what is the total mass of the phosphorous in the ingot. the atomic mass of silicon and phosphorous are 28.09 g/mol and 31.02g/mol.
Nanowire with square cross-section: Starting with the time-independent Schrodinger equation: (a) use separation of variables to obtain three ordinary differential equations (ODEs) (b) solve the ODEs and obtain the solution that satisfies the boundary..
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