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A 500-kHz uniform plane wave propagates beneath the earth's surface. The amplitude of the - E field just beneath the surface is 120 V/m. If the relative permeability, the dielectric constant, and the conductivity of the earth are taken as 1, 16, and 0.02 S/m, respectively, determine (a) the propagation, attenuation, and phase constants, (b) the phase velocity, (c) the wavelength, (d) the intrinsic impedance, (e) the skin depth, and (f) the average power density. If the range is considered to be the distance at which 90% of the wave is attenuated, find the range of the signal being transmitted.
ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 248c and
Carbon dioxide initially at 50 kPa, 400 K, undergoes a process in a closed system until its pressure and temperatures are 2 MPa and 800 K, respectively. Assuming ideal gas behavior, find the entropy change of the carbon dioxide (Cp = 1.054 kJ/kg.K)
how do you mathematically calculate the number of years it takes to pay off loan in one equation if yearly income is
suppose the past data indicates that the probability of a fluorescent light produced from a production line has a
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A 255V shunt motor has an armature resistance of 0.245 Ohm and a field resistance of 124.9 Ohm. At no load (1200 r/min), the motor draws a current of 2.041 A. At full load, the motor draws 54 A. What's the motor's full load speed (in r/min)?
Hydrostatics and stability-In lightship condition, how does the ship trim and why? How does the ship react when weights are added or subtracted? How does the curve of statical stability change with vertical shift of weights?
air at one atmospheric pressure and at 20degc flows across a 12 mm diameter sphere witha free stream velocity of 5 ms.
the uniform slender bar abc weighs 6 lb and is intially at rest with end a bearing against the stop in the horizontal
two people 160-lb and 120-lb respectively are in a boat that is moving forward at 4 fts. if the 160-lb person jumps
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