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
maksim [4K]
2 years ago
13

Why can television satellites, which broadcast information as electromagnetic radiation, send signals from the vacuum of space?

a because electromagnetic radiation increases as the distance increases b because electromagnetic radiation does not need a medium to travel through c because space does not provide a medium that will block the satellite signals eliminate d because space is so vast that light waves can spread out to their full size and strength?
Physics
2 answers:
neonofarm [45]2 years ago
5 0
The answer is b. Electromagnetic waves do not need a medium to travel through.
iren [92.7K]2 years ago
4 0

Answer:

<u>B</u><u> because electromagnetic radiation does not need a medium to travel through.</u>

Explanation:

Long ago, we (humans) used to think that every wave needed a medium to travel trough. The hypothetical electromagnetic medium was called Aether, but this brought some predictions of the wave behavior that couldn't be measured. One famous experiment made trying to measure one of this predictions was the Michelson Morley experiment, that tried to measure the  Aether drag, the drag of the medium made by the Earth as it travels trough it, kinda like a ship making waves as passed by a canal. So, all this experiments didn't give any results, and no one knew why. Then it came Albert Einstein. In 1905 he published a revolutionary work, that we today call the Special Relativity Theory, that does not needs an aether to explain how the light travels trough space, and its a theory accepted by all scientist (or almost all) today.

You might be interested in
46 points :)
IgorC [24]

Answer:

Its is dividing by 2

Explanation:

It starts with 100 them it goes to 50, 25, 12.5 so its a cycle of dividing by 2

3 0
3 years ago
Read 2 more answers
According to the kinetic molecular therory, the pressure of a gas in a container will increase if the
Masja [62]

According to the kinetic molecular theory, the pressure of a gas in a container will increase if the number of collisions with the container wall increases.

<u>Explanation:</u>

Keeping the volume of the vessel constant, if we increase the amount of gas in it; the pressure will increase. This is because when the number of gas particles increases in that limited volume, they hit the walls of the container with more energy and hence, the overall pressure of the gas increases.

If we decrease the amount of gas in the vessel or increase the volume for the same amount of gas, the pressure decreases. As the pressure inside the vessel depends upon the gas supplied in the container.

5 0
3 years ago
One solution to minimize resonance with buildings is to ______ the width to span ratio.
Shtirlitz [24]

Answer:

Increase

Explanation:

Resonance is a phenomenon which occurs when a body A in motion set another body B into motion of it own natural frequency. So for resonance to be minimize in a body is to increase the width to span ratio. So as to reduce the overall vibration which affects directly building resonance, the stiffness or trusses and girders should be increase. The increase in this aspect helps to reinforce building structure and support.

3 0
2 years ago
Two particles are located on the x axis. particle 1 has a mass m and is at the origin. particle 2 has a mass 2m and is at x = +l
wlad13 [49]

The solution would be like this for this specific problem:

<span>
The force on m is:</span>

<span>
GMm / x^2 + Gm(2m) / L^2 = 2[Gm (2m) / L^2] -> 1

The force on 2m is:</span>

<span>
GM(2m) / (L - x)^2 + Gm(2m) / L^2 = 2[Gm (2m) / L^2] -> 2

From (1), you’ll get M = 2mx^2 / L^2 and from (2) you get M = m(L - x)^2 / L^2 

Since the Ms are the same, then 

2mx^2 / L^2 = m(L - x)^2 / L^2 

2x^2 = (L - x)^2 

xsqrt2 = L - x 

x(1 + sqrt2) = L 

x = L / (sqrt2 + 1) From here, we rationalize. 

x = L(sqrt2 - 1) / (sqrt2 + 1)(sqrt2 - 1) 

x = L(sqrt2 - 1) / (2 - 1) 


x = L(sqrt2 - 1) </span>

 

= 0.414L

 

<span>Therefore, the third particle should be located the 0.414L x axis so that the magnitude of the gravitational force on both particle 1 and particle 2 doubles.</span>

8 0
3 years ago
What is thermal energy?
lesya692 [45]
Heat comes from the movement of molecules so it's B

8 0
3 years ago
Read 2 more answers
Other questions:
  • What does the prefix kilo mean?
    9·2 answers
  • Prisms seperate __ light, such as that from the Sun by wavelength
    15·1 answer
  • What is the resistance of a 1.3-m-long copper wire that is 0.30 mm in diameter?
    9·1 answer
  • If different groups of scientist have access to the same data, how can they draw different conclusions?
    5·1 answer
  • The length of the minute hand of the clock is 14cm. Calculate the speed with which the tip of the minute hand moves
    7·1 answer
  • Which feature signifies to astronomers that a distant star is part of a planetary system
    6·2 answers
  • A spring stretches by 18 cm when a bag of potatoes weighing 56 N is suspended from its end. How much elastic potential energy in
    8·1 answer
  • Which of the following solutions will have the lowest freezing point?
    6·1 answer
  • Please help me with this i dont know it​
    12·1 answer
  • An object has a mass of 12 kg. On Planet A, the object weighs 117.6 N. The force of gravity on Planet A is
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!