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
ioda
4 years ago
5

Why are electromagnets, rather than permanent magnets, used in MRLs?

Physics
1 answer:
yKpoI14uk [10]4 years ago
5 0

Answer:

The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be quickly changed by controlling the amount of electric current in the winding. However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field.

Explanation:

You might be interested in
Sara wanted to paddle her canoe in the swamp to see alligators. She dragged the 45 Newton canoe for 36 seconds down the boardwal
Dafna11 [192]

Answer:

C .96 meters

Explanation: i just had this question

7 0
3 years ago
Color depends on what characteristic of light?
Andrej [43]

Answer:

On the wavelength

Explanation:

Visible light is just a small portion of the electromagnetic spectrum, which classifies all the electromagnetic waves from shortest wavelength (gamma rays) to longest wavelength (radio waves).

Visible light refers to the part of the spectrum which has wavelength between 380 nm and 750 nm. These are the only electromagnetic wave that our eyes can see, and depending on their wavelength, they appear as a different color. In particular, each color corresponds to a different range of wavelengths:

Violet: 380-450 nm

Blue: 450-495 nm

Green: 495-570 nm

Yellow: 570-590 nm

Orange: 590-620 nm

Red: 620-750 nm

6 0
3 years ago
A train travels 250 km westward from Carthage to Johnson City. The train arrives 2.5 hours after it left. What was the average v
den301095 [7]
The answer is C 100 km/h west
5 0
3 years ago
How do you label acceleration, momentum, speed, force, and velocity?
Akimi4 [234]
I have a a work sheet to do and i have choices for the diffrent words, 
<span>A:m </span>
<span>B:s </span>
<span>C:m/s </span>
<span>D:m/s2 </span>
<span>E:kg </span>
<span>F:kg m/s </span>
<span>G:N </span>
<span>H:m/s north </span>
<span>so can you help me match the words with there answers</span>
3 0
3 years ago
Can someone help me
SashulF [63]
That is b. hope this helps cx
8 0
3 years ago
Other questions:
  • While at a party, you pull up a sound intensity level app on your phone (everyone does stuff like that, right?), and it reads 83
    8·1 answer
  • A 75-hp compressor in a facility that operates at full load for 2500 h a year is powered by an electric motor that has an effici
    7·1 answer
  • Fully describe or explain the solid state of matter. You should include at least 5 ways to characteristics or descriptors that p
    9·1 answer
  • Which example best illustrates the transfer of energy between two waves?
    5·2 answers
  • How to understand physics
    5·1 answer
  • A wave takes 2 seconds to reach the end. what is the frequency of the wave?
    6·1 answer
  • A surveyor measures the distance across a straight river by the following method: Starting directly across from a tree on the op
    5·1 answer
  • Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which
    15·2 answers
  • 1. What does the term monecious mean?
    13·1 answer
  • Why do students and scientists construct scale models of natural phenomena? (1 point) Oto define new units of measurement O to c
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!