Which of the following is NOT true of electromagnetic waves. a. No medium is required to...
Which of the following is NOT true of electromagnetic waves.
a. No medium is required to produce the waves.
b. The waves move outward in all directions from the vibrating charge that created them.
c. The electric field is parallel to the magnetic field in the waves.
d. Both electric and magnetic fields are perpendicular to the direction of motion of the wave.
Homework Answers
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Which of the following is NOT true of electromagnetic waves.
a. No medium is required to...
Which one among the following statments is CORRECT? A.An electromagnetic wave has an electric field and...
Which one among the following statments is CORRECT? A.An electromagnetic wave has an electric field and a magnetic field vibrating perpendicular to each other. B.Electromagnetic waves cannot travel in empty space. C. An electromagnetic wave has an electric field and a magnetic field vibrating parallel to each other. D. Gamma rays are not electromagnetic waves.
1. An electromagnetic plane wave is propagating through space. Its electric field vector is given by...
1. An electromagnetic plane wave is propagating through space. Its electric field vector is given by E i Eo cos(kz- ot). Its magnetic field vector is: a) B=jBo cos(kz-t) b) B- kBo cos(ky-at) c) B-iB, cos(ky-) d) B- kBo cos(kz-o) 1 2. The velocity of an electromagnetic plane wave is: a) In the electric field direction b) In the magnetic field direction c) In a direction parallel to the electric and magnetic fields d) In a direction perpendicular to the...
Which of the following statements about electromagnetic radiation is true? A.) It always travels at 3×108...
Which of the following statements about electromagnetic radiation is true? A.) It always travels at 3×108 m/s. B.) It consists of perpendicularly oscillating electric and magnetic fields, and the direction of propagation is perpendicular to both. C.) It consists of oscillating electric and magnetic fields that are parallel to one another and perpendicular to the direction of propagation. D.)The oscillating electric and magnetic fields are completely out of phase with one another
Which of the following statements is correct for electromagnetic waves: (a) The magnetic field vector (B)...
Which of the following statements is correct for electromagnetic waves: (a) The magnetic field vector (B) is always parallel to the electric field vector (E) (b)B is always perpendicular to E (c)The angle between B and E is always 45° (d)Direction of B is not linked anyhow to the direction of E. Which one?
1. Which of the following statements about electromagnetic waves in free space are true? (There could...
1. Which of the following statements about electromagnetic waves in free space are true? (There could be more than one correct choice.) The electric field carries more energy than the magnetic field. The electric and magnetic fields have equal amplitudes. The electric field carries the same mount of energy as the magnetic field. The frequency of the magnetic field is the same as the frequency of the electric field. The...
Light, radiant heat (infrared radiation), X rays, and radio waves are all examples of traveling electromagnetic...
Light, radiant heat (infrared radiation), X rays, and radio waves are all examples of traveling electromagnetic waves. Electromagnetic waves comprise combinations of electric and magnetic fields that are mutually compatible in the sense that the changes in one generate the other. The simplest form of a traveling electromagnetic wave is a plane wave. For a wave traveling in the x direction whose electric field is in the y direction, the electric and magnetic fields are given by Ē = E,...
Which of the following are true about the energy of electromagnetic waves in free space? A.Doubling...
Which of the following are true about the energy of electromagnetic waves in free space? A.Doubling the intensity of an electromagnetic wave doubles the amplitude of the magnetic field. B.The instantaneous energy density of the magnetic field is . C.The average intensity of an electromagnetic wave is . D..The time average of is .
Per Maxwell’s first and second equations, an electromagnetic wave a. has magnetic flux constant. b. has,...
Per Maxwell’s first and second equations, an electromagnetic wave a. has magnetic flux constant. b. has, in fact, no electric and magntetic fields. c. has electric field perpendicular to the direction of propagation and magnetic field randomly oriented. d. must be longitudinal. e. must have electric and magnetic fields parallel to the direction fo propagation. f. must have electric and magnetic fields perpendicular to the direction of propagation.
NUMBER 2 only explain clearly step by step thanks I. Representations of electromagnetic waves A. Shown...
NUMBER 2 only explain clearly
step by step
thanks
I. Representations of electromagnetic waves A. Shown below are mathematical and pictorial representations of an electromagnetic plane wave propagating through empty space. The electric field is parallel to the z-axis; the magnetic field is parallel to the y-axis. .y, and are unit vectors along the x, ty, and +z directions.) 1. In which direction is the wave propagating? Explain how you can tell from the expressions for the electric field and...
The direction of the magnetic field in an electromagnetic wave is: A. random, and not related...
The direction of the magnetic field in an electromagnetic wave is: A. random, and not related to the direction of the electric field or the direction of propagation. B. anti-parallel to the electric field. C. parallel to the direction of propagation of the wave. D. parallel to the electric field. E. perpendicular to the electric field.
1. An electromagnetic plane wave is propagating through space. Its electric field vector is given by E i Eo cos(kz- ot). Its magnetic field vector is: a) B=jBo cos(kz-t) b) B- kBo cos(ky-at) c) B-iB, cos(ky-) d) B- kBo cos(kz-o) 1 2. The velocity of an electromagnetic plane wave is: a) In the electric field direction b) In the magnetic field direction c) In a direction parallel to the electric and magnetic fields d) In a direction perpendicular to the...
Light, radiant heat (infrared radiation), X rays, and radio waves are all examples of traveling electromagnetic waves. Electromagnetic waves comprise combinations of electric and magnetic fields that are mutually compatible in the sense that the changes in one generate the other. The simplest form of a traveling electromagnetic wave is a plane wave. For a wave traveling in the x direction whose electric field is in the y direction, the electric and magnetic fields are given by Ē = E,...
NUMBER 2 only explain clearly
step by step
thanks
I. Representations of electromagnetic waves A. Shown below are mathematical and pictorial representations of an electromagnetic plane wave propagating through empty space. The electric field is parallel to the z-axis; the magnetic field is parallel to the y-axis. .y, and are unit vectors along the x, ty, and +z directions.) 1. In which direction is the wave propagating? Explain how you can tell from the expressions for the electric field and...
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