Question

In an EM wave traveling west, the B field oscillates up and down vertically and has a frequency of 92.0 kHz and an rms strength of 7.65×10−9T. Assume that the wave travels in free space. What is the rms strength of the electric field?

Answer #1

In an electromagnetic wave traveling south, the E field
oscillates in the east-west direction and has a peak strength of
1.0 V/m.
What is the peak strength of the magnetic field, and what is its
direction?
Answer in T, and direction (s).
Please show all work and formulas for this question.

How much energy is transported across a 1.50 cm2 area per hour
by an EM wave whose E field has an rms strength of 33.8 mV/m ? The
wave travels in free space.

At
a given instant time, a traveling EM wave is noted to have its
maximum magnetic field pointing west and its maximum electric field
pointing south.
Part A
In which direction is the wave traveling? North-
Downward-South-Upward-West or East?
Part B
If the rate of energy flow is 530 W/m^2, what are the maximum
values for the two fields?
Part C

What is the maximum total energy density of an EM wave, whose
electric field component has a rms magnitude of 1.27×103
N/C and a maximum magnetic field of 6.00×10−6 T

The E⃗ field in an EM wave in free space has a peak of 22.9
mV/m
What is the average rate at which this wave carries energy
across unit area per unit time?

Information: A sinusoidal EM wave emitted by a radio tower has a
frequency of 750 megahertz. The root-mean-square magnetic field
strength of the wave at a distance of 1.00-km from the tower is
5.5*10^-10 T. wavelength = 0.40m Electric field strength amplitude
of the wave = 0.233V/m Intensity of the wave = 7.22*10^-5
Question: Assuming these waves easily penetrate your body( they
do) how much energy is contained inside your body due to these
waves at any given time if...

A traveling wave on a string oscillates with an amplitude of
0.080m and a frequency of 2.5Hz. The speed of the waves on the
string is 10 m/s. At t=0, the end from which the oscillations
originate has a vertical displacement of 0m.
a) Find the angular frequency, period, wavelength, and wave
number.
b) Write a wave function describing the wave.
c) The linear mass density μ of the string is 0.300kg/m, and
tension in the spring is maintained at...

1)A particle moving to the right in a uniform magnetic field
directed upwards experiences a magnetic force directed inwards. The
particle is
(A) positively charged.
(B) negatively charged.
(C) uncharged.
(D) Either A or B.
(E) Any of the above.
2) A charged particle moves in a uniform magnetic field which is
perpendicular to the particle’s velocity. Which of the following
statements is/are correct?
(A) The particle moves in a circle.
(B) The kinetic energy of the particle does not...

Electromagnetic waves are traveling straight down towards the
center of the earth. For these waves...
A) visible light has a shorter wavelength than infrared
light
B) if the electric field points north, the associated magnetic
field points east
C) a high-frequency wave has a longer wavelength than a
low-frequency wave
D) if the electric field points east, the associated magnetic
field points north
E) green light has a higher frequency than violet light

Consider a harmonic, electromagnetic plane wave traveling along
a line from the origin to the point (2,6,4). It is linearly
polarized and its electric field lies in a plane perpendicular to
the direction of travel of the wave. The wavelength of the wave is
2.0 mm and it has a frequency of 120 GHz.
a) What is the index of refraction of the medium in which the
wave is traveling?
b) Write an expression for E(x,t), that is, the magnitude...

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