The greatest intensity radiated electromagnetic wave is found where? a) closest to the antenna b) farthest...
The greatest intensity radiated electromagnetic wave is found where?
a) closest to the antenna
b) farthest from the antenna
c) along the axis of the antenna
d) off the axis of the antenna
Homework Answers
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The greatest intensity radiated electromagnetic wave is found
where?
a) closest to the antenna
b) farthest...
A linearly polarized electromagnetic wave has an average intensity of 324 W/m2. This wave is directed...
A linearly polarized electromagnetic wave has an average
intensity of 324 W/m2. This wave is directed towards two
ideal polarizers (in real polarizers, transmission is also effected
by reflection and absorption). Polarizer A is oriented with its
transmission axis at an angle of θ1 = 40.0° with the
incident electric field. Polarizer B has its axis at an angle of
θ2 = 70.6° with the incident electric field, as shown in
the figure.
What is the average intensity of the...
Question 1 The power radiated by a lossless antenna is 10 watts.
Question 1 The power radiated by a lossless antenna is 10 watts. The directional characteristics of the antenna are represented by the radiation intensity of U = 2cos3θ watts/unit solid angle. Find the (a) Maximum power density at a distance of 1000 m (assume far-field distance) (b) Maximum directivity (c) Maximum gain Question 2 In target-search ground-mapping radars it is desirable to have echo power received from a target, of constant cross section, to be independent ofits range. For one such application, the desirable radiation intensity...
A22) An electromagnetic wave of wavelength 620 nm has an intensity of 1.0 W/m². The electric...
A22) An electromagnetic wave of wavelength 620 nm has an intensity of 1.0 W/m². The electric field amplitude is closest to: A) 27 V/m B) 2.7x108 V/m C) 1.6x10-2 V/m D) 750 V/m
The momentum density of an electromagnetic wave is defined as . The direction of the momentum density...
The momentum density of an electromagnetic wave is defined as . The direction of the momentum density denotes the direction of the propagation of an electromagnetic wave. At a particular instant, the electric field associated with an electromagnetic wave propagating in free space is directed along the positive x-axis and the magnetic field is along the positive z-axis, as shown in the figure. What is the direction of propagation for this electromagnetic wave? The electromagnetic wave propagates: A. along the positive...
Wave from a wire antenna An electromagnetic wave from a wire antenna travels (from the reader)...
Wave from a wire antenna
An electromagnetic wave from a wire antenna travels (from the reader) toward the plane of the paper. At time t = 0.0 s it strikes the paper at normal incidence. At point o and t = 0.0 s, the magnetic field vector has its maximum value, 3.57x10-8 T pointing in the negative y-direction. The frequency of this wave is 2.53x106 Hz. o B (t=0) What is the x-component of the associated electric field E at...
A sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 34.5 cm and...
A sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 34.5 cm and an electric-field amplitude of 6.20×10−2 V/m at a distance of 350 m from the antenna. a)Calculate the frequency of the wave. b)Calculate the magnetic-field amplitude. c)Find the intensity of the wave.
The magnetic field of an electromagnetic wave is given by where B is measured in Tesla,...
The magnetic field of an electromagnetic wave is given by
where B is measured in Tesla, x in meters, and t in seconds.
a) What is the wavelength of the wave? Enter your answer in
nm.
b) What is the frequency (not the angular
frequency) of the wave? Enter your answer in THz (terra-hertz),
where 1 THz = 1012 Hz.
c) What is the amplitude of the wave's electric field? Enter
your answer in V/m.
d) What is the average...
Page 10 Vim enters an ideal bitted wave then of 225 W/m Problem 4 Unpolarized electromagnetic...
Page 10 Vim enters an ideal bitted wave then of 225 W/m Problem 4 Unpolarized electromagnetic wave (f = 6.00 x 10 Hz) with an average intensity of 845 W/m enters an polarizer with a vertical transmission axis. Assume the incident light is moving along the x-axis. The transmitted was enters a second ideal polarizer. The wave that exits the second polarizer is found to have an average intensity of 225 w (a) (10 exam points) What is the orientation...
The momentum density of an electromagnetic wave is defined as Pen=€(ĒXB). The direction of the momentum...
The momentum density of an electromagnetic wave is defined as Pen=€(ĒXB). The direction of the momentum density denotes the direction of the propagation of an electromagnetic wave. At a particular instant, the electric field associated with an electromagnetic wave propagating in free space is directed along the positive x-axis and the magnetic field is along the positive z-axis, as shown in the figure. Z B E What is the direction of propagation for this electromagnetic wave? The electromagnetic wave propagates:...
The momentum density of an electromagnetic wave is defined as Pem=€(ĒxB). The direction of the momentum...
The momentum density of an electromagnetic wave is defined as Pem=€(ĒxB). The direction of the momentum density denotes the direction of the propagation of an electromagnetic wave. At a particular instant, the electric field associated with an electromagnetic wave propagating in free space is directed along the positive X-axis and the magnetic field is along the positive z-axis, as shown in the figure. Z B E What is the direction of propagation for this electromagnetic wave? The electromagnetic wave propagates:...
A linearly polarized electromagnetic wave has an average
intensity of 324 W/m2. This wave is directed towards two
ideal polarizers (in real polarizers, transmission is also effected
by reflection and absorption). Polarizer A is oriented with its
transmission axis at an angle of θ1 = 40.0° with the
incident electric field. Polarizer B has its axis at an angle of
θ2 = 70.6° with the incident electric field, as shown in
the figure.
What is the average intensity of the...
A22) An electromagnetic wave of wavelength 620 nm has an intensity of 1.0 W/m². The electric field amplitude is closest to: A) 27 V/m B) 2.7x108 V/m C) 1.6x10-2 V/m D) 750 V/m
Wave from a wire antenna
An electromagnetic wave from a wire antenna travels (from the reader) toward the plane of the paper. At time t = 0.0 s it strikes the paper at normal incidence. At point o and t = 0.0 s, the magnetic field vector has its maximum value, 3.57x10-8 T pointing in the negative y-direction. The frequency of this wave is 2.53x106 Hz. o B (t=0) What is the x-component of the associated electric field E at...
The magnetic field of an electromagnetic wave is given by
where B is measured in Tesla, x in meters, and t in seconds.
a) What is the wavelength of the wave? Enter your answer in
nm.
b) What is the frequency (not the angular
frequency) of the wave? Enter your answer in THz (terra-hertz),
where 1 THz = 1012 Hz.
c) What is the amplitude of the wave's electric field? Enter
your answer in V/m.
d) What is the average...
Page 10 Vim enters an ideal bitted wave then of 225 W/m Problem 4 Unpolarized electromagnetic wave (f = 6.00 x 10 Hz) with an average intensity of 845 W/m enters an polarizer with a vertical transmission axis. Assume the incident light is moving along the x-axis. The transmitted was enters a second ideal polarizer. The wave that exits the second polarizer is found to have an average intensity of 225 w (a) (10 exam points) What is the orientation...
The momentum density of an electromagnetic wave is defined as Pen=€(ĒXB). The direction of the momentum density denotes the direction of the propagation of an electromagnetic wave. At a particular instant, the electric field associated with an electromagnetic wave propagating in free space is directed along the positive x-axis and the magnetic field is along the positive z-axis, as shown in the figure. Z B E What is the direction of propagation for this electromagnetic wave? The electromagnetic wave propagates:...
The momentum density of an electromagnetic wave is defined as Pem=€(ĒxB). The direction of the momentum density denotes the direction of the propagation of an electromagnetic wave. At a particular instant, the electric field associated with an electromagnetic wave propagating in free space is directed along the positive X-axis and the magnetic field is along the positive z-axis, as shown in the figure. Z B E What is the direction of propagation for this electromagnetic wave? The electromagnetic wave propagates:...
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