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
quester [9]
3 years ago
13

There are two types of waves, mechanical and electromagnetic. Microwaves, infrared, and radio was are examples of electromagneti

c waves. Which statement is true about the speed of an electromagnetic wave?
A) It is not affected by changes in media.
B) It is slower in a vacuum than in a medium.
C) In a vacuum, its speed equals half the speed of light.
D) It slows down when it goes from a vacuum to a medium.
Physics
1 answer:
aivan3 [116]3 years ago
5 0

Answer:

The answer is D.

Explanation:

One explanation I can give you is that generally waves travel faster through denser medium because the particles are tightly packed together and so they can transfer energy faster. But to verify the answer, I used Process of Elimination because the other 3 answers are not true. Choice A is entirely true, wave speed depends on the medium it is travelling through, so there is no way choice A is correct. Choice B is wrong because for example if we take light(an EM wave), it travels at a constant speed of 3.0x10^8 m/s in a vacuum and in open space. So, that proves that air or vacuum do not affect the speed of the wave in another medium. Choice C is related to Choice B, we just proved the speed of light is constant everywhere whereas choice C says that in a vacuum the speed is halved. Good luck in your Physics class and I hope for your best!

You might be interested in
How can you measure the distance an object has moved?
Naily [24]

You must observe the object twice.

-- Look at it the first time, and make a mark where it is.

-- After some time has passed, look at the object again, and
make another mark at the place where it is.

-- At your convenience, take out your ruler, and measure the
distance between the two marks.

What you'll have is the object's "displacement" during that period
of time ... the distance between the start-point and end-point. 
Technically, you won't know the actual distance it has traveled
during that time, because you don't know the route it took.


8 0
3 years ago
What statement is true about a spring?
snow_tiger [21]
I think B is the most correct, because logically it's harder to bend a stiffer spring than it is to bend a softer one. Also, I don't think length comes into play. So B.
8 0
3 years ago
Read 2 more answers
The object will feel minimum force of gravity at the
Alika [10]

Answer:

space , small amount of gravity is found in the space ,infact we can say that there is no gravity in the space

4 0
3 years ago
Read 2 more answers
What energy output objects work with the turbine?
Sonbull [250]

Answer:

Energy output from Solar panel is Electric Energy so any object which require electric energy an input will run by turbine. for example Electric Bulb,Electric Water Heaters.

hope it helps you!!

6 0
2 years ago
A wave of infrared light has a speed of 6 m/s and a wavelength of 12 m. What is the frequency of this wave?
givi [52]
I'll be happy to solve the problem using the information that
you gave in the question, but I have to tell you that this wave
is not infrared light.

If it was a wave of infrared, then its speed would be close
to 300,000,000 m/s, not 6 m/s, and its wavelength would be
less than 0.001 meter, not 12 meters.

For the wave you described . . .

             Frequency  =  (speed)  /  (wavelength)

                                 =  (6 m/s)  /  (12 m)

                                 =      0.5 / sec

                                 =      0.5 Hz .  

(If it were an infrared wave, then its frequency would be
greater than 300,000,000,000 Hz.)
5 0
2 years ago
Read 2 more answers
Other questions:
  • What are 3 ways objects can be grouped based on how much light they let shine/pass through them.
    14·1 answer
  • Wich of these is not a sign of chemical change 1 A gas is given off
    5·1 answer
  • I need help finding moment
    14·1 answer
  • Please Answer Fast! Tomorrow is my exam!
    14·1 answer
  • In a later chapter we will be able to show, under certain assumptions, that the velocity v(t) of a falling raindrop at time t is
    6·1 answer
  • A long, vertical pipe (radius R) filled with an incompressible Newtonian fluid, is initially capped at its lower end. At some in
    13·1 answer
  • will mark brainliest. The speed of sound is 340 m/s where a tuning fork produces the second resonance position above a closed ai
    9·2 answers
  • Un sirop bien sucrée
    6·2 answers
  • Here is the picture of an aircraft, with the forces working on it shown. Identify the force that corresponds to the question mar
    10·2 answers
  • A baseball of mass 1.23 kg is thrown at a speed of 65.8 mi/h. What is its kinetic energy?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!