please answe these 2 topic
Topic 1: Electromagnetic Waves
Electromagnetic waves differ from mechanical waves in that
they do not require a medium to propagate. This means that
electromagnetic waves can travel not only through air and solid
materials, but also through the vacuum of space.
According to your Knowledge, answer the following
questions:
- Describe the characteristic of Electromagnetic Waves?
- Radio Waves travel along different paths:
a. State their names?
b. Which of them does Loran-C receiver receive?...
A. What are electromagnetic waves? What is the difference
between visible light and other electromagnetic waves that we
cannot see? Name four electromagnetic waves that we are not able to
see.
B- What is the remnant energy of the Big Bang, called Cosmic
Microwave Background waves (CMB)? How can we say that the universe
is expanding by comparing it to the electromagnetic waves at the
time of the Big Bang?
C- What is the wavelength of red light and blue...
Discussion #21 – Electromagnetic Waves - Physics 221
2. Electromagnetic Waves and Intensity
Goal: Practice with the intensity of electromagnetic waves.
2 The intensity of an electromagnetic wave is 10 W/m .
a) What is the intensity if the electric field is doubled?
b) What is the intensity if the magnetic field is doubled?
c) What is the intensity if the frequency is doubled?
3. Miscellaneous Wave Properties
Goal: Practice working with various properties of waves. These
are unrelated parts....
(1) Radio waves and light are electromagnetic waves and
transverse waves that can operate in a medium or in space.
What is an Aether or ether?
Upon which medium does sound travel the fastest?
(2) Some scientists think that ether does exist but does exist
in another dimension that we cannot see. Can you elaborate on
this?
Q3.
Electromagnetic waves are produced by oscillating accelerated
particle. Give the reason, why electromagnetic waves have more
application than the non-electromagnetic waves? An EM radiation
coming out when a TV remote is switched on. Now, if it starts
propagating from vacuum into water, it is assumed that its speed is
reduced to half, predict its wavelength in water and justify your
result. Compare and validate your results for a radiation coming
out from an X-ray machine. Compare the effects on...
Describe Maxwell's predictions and electromagnetic
waves.
In your own words, explain electromagnetic spectrum and give
examples.
In your own words, explain Doppler effect for the
electromagnetic waves and red shift.
ANSWER IT ALL OR DONT ANSWER. TY.
(Show All the Calculations /Wherever Necessary Draw
Diagrams)
Q 1. An electromagnetic wave with its electric field parallel
to the plane of incidence
is incident from vacuum onto the surface of a perfect
conductor at an angle of
incidence θ. Obtain an expression for the total electric and
the magnetic field.