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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.
underground water is to be pumped by a 70 percent efficient 3 kw submerged pump to a pool whose free surface is 30 m
it is desired to prepare an emulsion in a baffled 4 in number tank using standard flat-blade disc turbine. the tank is
a helicopter gas turbine requires an overall compressor p.r. of 101. this is to be obtained using a two-spool layout
a 5 m3 container is filled with 900 kg of granite density 2400 kgm3 and the rest of the volume is air with density
The figure shows a weapon called a battering ram (modern large battering rams are typically mounted on armored vehicles). The ram has weight Wr=2590 lb, center of mass at E, and radius of gyration kE=6.4 ft. Also let the distance between points A a..
Silicon rubber has a Poisson's ratio of 0.4. Consider a silicon rubber drain hose for a surgical procedure; the hose has an outer diameter of 4 mm and a wall thickness of 0.5 mm. How much does the lumen (interior space) of the catheter constrict if t..
As shown in the picture, air flows through a pipe. Heat is supplied to the airflow. The air at the inlet is 200kPa and 20 C with flow velocity of 5m/s. The exiting air is 180 kPa and 40 °C. The diameter of the pipe is 0.28 m. Determine (a) the volume..
A large plastic casting with thermal diffusivity 6.0 x10^7 m2 /s is removed from its mold at a uniform temperature of 150 degrees C. The casting is then exposed to a high-velocity air stream such that the surface experiences a sudden change in temper..
a a thermopile consisting of 5 junction pairs of chromel-constantan is used to measure a temperature difference of 50oc
the free convection heat transfer coefficient on a thin hot vertical plate suspended in still air can be determined
1. a face-milling operation is performed to finish the top surface of a steel rectangular 5 workpiece 12.0 in long by
liquid water enters a manifold series of pipes at 1080 psi and 125 degf with a mass flow rate of 3.5 x 10 6 lb hr and
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