The electric field intensity of a linearly polarized plane wave propagatingin the +z Direction in seawater is H-ay 100 sin(107лt-/3) atz=0. The constitutive parameters of sea water are Єr = 80 μr =1 and σ = 4). (a) Determine the attenuation constant, Phase constant,ointrinsic impedance Phase velocity/wavelength and skin depth (b) Findthe distance at which the amplitude of E Is 1/8 its value at z=0 (c) Writethe expression for E(z,t) and H(z,t) at Z=0.4 m as functions of t

a) To determine the attenuation constant, phase constant, intrinsic impedance, phase velocity,…

Answered: The electric field intensity of a…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

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Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 62P: Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1,00 W/m2. (a) If...

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On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by 45.0°C in 120 s. (a) What was the rate of energy absorption by the spaghetti, given that its specific heat is 3.76103J/kg.C ? Assume the spaghetti is perfectly absorbing. (b) Find the average intensity of the microwaves, given that they are absorbed over a circular area 20.0 cm in diameter. (C) What is the peak electric field strength of the microwave? (d) What is its peak magnetic field strength?
Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1,00 W/m2. (a) If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away must you be to be exposed to an intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection, (b) What is the maximum electric field strength at the safe intensity? (Note that early radar units leaked more than modem ones do. This caused identifiable health problems, such as cataracts, for people who worked near them.)
A uniform plane wave in free space is given by: Exs=800cos⁡(10^8t - βz)az V/m Find: Phase constant, propagation speed, wavelength and intrinsic impedance. Magnetic field intensity at the point (0.1,1.5,0.4), t = 8ns Power density for the same point.
Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 1.00 W/m2. If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmin- must you be to be exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. Imin What is the maximum electric field strength E, at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²). The speed of light is c = 3.00 x 108 m/s. Eo V/m Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them.
a) Obtain the time domain expression for the elt based phasor field expresion, E (z) =a„E̟e¯jn/2ejkz V/m b) For the magnetic field component of a plane wave in a lossless medium, H= 50 sin (2n x 106 t – 6x)^a, mA/m, determine the wave velocity. c) For the H field given in (b), determine the associated Efield.
The GPS networkconsists of 24 satellites, each of which makes two orbits around the earthper day. Each satellite transmits a 50.0 W (or even less) sinusoidal electromagneticsignal at two frequencies, one of which is 1575.42 MHz.Assume that a satellite transmits half of its power at each frequency andthat the waves travel uniformly in a downward hemisphere. What wavelength must the receiver be tuned to?
A smooth plane wave at a frequency of 3 GHz and y-polarized, dielectric constant 2.5 and lossin a magnetic medium with a tangent of 0.05, it spreads in the + x direction,a) Determine the distance at which the amplitude of the propagating wave will be halved.b) Find the impedance, wavelength and phase velocity of the wave in the medium.c) E = ay50Sin at x = 0 (6pi10 ^ 9t + pi / 3) (V / m) assuming H is instantaneous for each t and xWrite your statement.
The magnetic field of a uniform plane wave propagating in the +Y direction in sea water {Ɛ, = 100, µ, = 1,0 = 4} at y = 0 is H = a, cos(1010n t – 0. 5ny) (A/m). Determine: a) The attenuation constant, the phase constant and the intrinsic impedance b) The phase velocity, the wavelength and the skin depth c) Write the expressions of E(y, t) & H(y,t)at y = 0.75 (m)
In a certain media with relative permeability ur = 2.4, the speed of propagation = 1.5x10* m/s, and the electric field given the phasor form E. =10e10.2 ay V/m Determine: (d) The relative permitiviy. (e) Intrinsic impedance. (f) Magnetic field H in time domain form.
What is the frequency of infrared light emitted by an LED in a remote control with a wavelength of 906 nm if the speed of light is given as c= 3.00 x 108 m s-1. Give your answer in Hz to an appropriate number of significant figures.
Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 2.00 W/m?. If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmina must you be to be exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. min m What is the maximum electric field strength Eo at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²). The speed of light is e = 3.00 x 10° m/s. Eo V/m Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them. Question Credit: OpenStax College Physics
The sinusoidal current waveform having the R.M.S value of 15 A, then the maximum value is

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