1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
denis-greek [22]
3 years ago
13

Which statement describes the speed of electromagnetic waves?

Physics
2 answers:
goldfiish [28.3K]3 years ago
7 0

Answer:

Their speed in a vacuum is a constant value.

Explanation:

Electromagnetic waves consits of oscillations of electric field and magnetic field. The oscillations of these fields occur in a direction perpendicular to the direction of propagation of the waves, so they are transverse wave. Electromagnetic waves, contrary to mechanical waves, do not need a medium to propagate, so they can also travel through a vacuum. In a vacuum, their speed is constant and has always the same value, the speed of light:

c=3\cdot 10^8 m/s

Marianna [84]3 years ago
3 0

Answer:

Their speed in a vacuum is a constant value.

Explanation:

You might be interested in
What is the name given to a material with zero resistance that can conduct electricity without a loss of energy?
tatyana61 [14]
It would be C. Superconductor 
3 0
3 years ago
A constant magnetic field can be used to produce an electric current. True or False?
Umnica [9.8K]

this question is true

6 0
3 years ago
Suppose that you observe light emitted from a distant star to be at a wavelength of 525 nm. The wavelength of light to an observ
Tomtit [17]

Answer:

The velocity of the star is 0.532 c.

Explanation:

Given that,

Wavelength of observer = 525 nm

Wave length of source = 950 nm

We need to calculate the velocity

If the direction is from observer to star.

From Doppler effect

\lambda_{0}=\sqrt{\dfrac{c+v}{c-v}}\times\lambda_{s}

Put the value into the formula

525=\sqrt{\dfrac{c+v}{c-v}}\times950

\dfrac{c+v}{c-v}=(\dfrac{525}{950})^2

\dfrac{c+v}{c-v}=0.305

c+v=0.305\times(c-v)

v(1+0.305)=c(0.305-1)

v=\dfrac{0.305-1}{1+0.305}c

v=−0.532c

Negative sign shows the star is moving toward the observer.

Hence, The velocity of the star is 0.532 c.

7 0
3 years ago
If a bottlel filled with water 25c and freezes at -5c the waters tempreture drop what is the sign of the systems q,w,ΔE
laila [671]
Triangle because h2o and celsious have yhree silibyles and the triangle has three sides
6 0
3 years ago
The voltage drop across any component is
earnstyle [38]

Answer:

The voltage si the nevery Hokage de Naruto y fue su amigo

7 0
2 years ago
Other questions:
  • Lenses can be found in a variety of objects which example does not have a lens?
    14·2 answers
  • Drag the tiles to the correct boxes to complete the pairs.
    12·2 answers
  • The potential difference in a simple circuit is 2 v and the resistance is 2 ω . what current flows in the circuit? answer in uni
    7·1 answer
  • A cannon fires a 0.652 kg shell with initial
    14·2 answers
  • ¿Que es un átomo???????
    9·1 answer
  • Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?
    10·2 answers
  • Describe the difference between particle motion in solids and liquids.
    14·2 answers
  • 57. A red ball (m= 10 kg) is moving at 3 m/s. A green ball (m = 8 kg) is moving at 3.5 m/s. Which ball has more
    7·1 answer
  • HELP ASAP I HAVE A FIVE MIN DEADLINE!!!
    10·1 answer
  • How is the blance between oxygen and carbon dioxide maintained the atmosphere ?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!