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
hichkok12 [17]
3 years ago
15

How are electromagnetic waves able to travel without a medium?

Physics
1 answer:
vazorg [7]3 years ago
7 0
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 trough air and solid materials, but also trough the vacuum of space.
You might be interested in
A 5000 kg open train car is rolling on frictionless rails at 22 m/s when it starts pouring rain. A few minutes later, the car’s
Phantasy [73]

Answer:

500 kg

Explanation:

It is given that,

The mass of a open train car, M = 5000 kg

Speed of open train car, V = 22 m/s

A few minutes later, the car’s speed is 20 m/s

We need to find the mass of water collected in the car. It is based on the conservation of momentum as follows :

initial momentum = final momentum

Let m is final mass

MV=mv

m=\dfrac{MV}{v}\\\\m=\dfrac{5000\times 22}{20}\\\\=5500\ kg

Water collected = After mass of train - before mass of train

= 5500 - 5000

= 500 kg

So, 500 kg of water has collected in the car.

3 0
3 years ago
I need help with this
Tanzania [10]

While ice melts, it remains at 0 °C, and the liquid water that is formed with the latent heat of fusion is also at 0 °C. The heat of fusion for water at 0 °C is approximately 334 joules per gram, and the heat of vaporization at 100 °C is about 2,230 joules per gram. So it will be C

7 0
3 years ago
Read 2 more answers
What does it mean that " memory is organized in semantic<br> networks
bearhunter [10]

Answer:

Semantic memory is a category of long-term memory that involves the recollection of ideas, concepts and facts commonly regarded as general knowledge. Examples of semantic memory include factual information such as grammar and algebra.

7 0
3 years ago
Prove for N/C=Volt/m
Zigmanuir [339]

Answer:

simple, Volt =change in potential energy/Charge

the unit of energy is newton meter (Force*distance)

the unit of charge is coloumb

So, Volt/meter=newton* meter/coloumb*meter

=newton/coloumb (hence proved)

This unit is the potential drop per unit of length in a conductive wire with uniform resistance

7 0
3 years ago
Find the value of Vo​
Ad libitum [116K]
It is 20 voltage per hour
4 0
2 years ago
Other questions:
  • Why is it important to practice a presentation?
    7·2 answers
  • A proton is at the origin. One electron is at the point (2m, 4m)
    8·1 answer
  • A resistance is added in parallel to a 470 Ω resistance to give an effective resistance of 330 Ω. What is the approximate value
    15·1 answer
  • What is pressure? A)Shown in picture B)Shown in picture C)Shown in picture D)Shown in picture
    14·1 answer
  • What type of force slows you down as you slide across the floor?
    15·2 answers
  • A 1250 kg car is stopped at a traffic light. A 3550 kg truck moving at 8.33 m/s hits the car from behind. If bumpers lock, how f
    8·1 answer
  • If you ride your bicycle down a straight road for 500 m then turn around and ride back your distance is your displacement a.Grea
    13·1 answer
  • A horizontail rod (oriented in the east -west direction) is moved northward at a constant velocity through a magnetic field that
    11·1 answer
  • 1. Which pair of physical quantities consists of two vectors?
    6·2 answers
  • True or False: Any wavelength of light would work for this experiment. Explain your response, including the term quantum or quan
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!