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
Flauer [41]
3 years ago
10

3. When does the iron core in an electromagnet become magnetic?​

Physics
1 answer:
rosijanka [135]3 years ago
3 0

Answer: When electricity flows through it.

Explanation:

The electromagnet exhibits magnetic properties only as soon as current flows through the nucleus. Namely, the electric current in the space around the electrical conductor through which it passes creates a magnetic field. Unlike a permanent magnet, which has a permanent property of magnetism, the electromagnet is a temporary magnet because the magnetic field also disappears when the current ceases.

You might be interested in
What upward gravitational force does a 5600kg elephant exert on the earth?
Anastaziya [24]
Force is determined by multiplying mass and gravity (F= mg). To determine the answer, the mass of the elephant (5600 kg) is multiplied with the gravity (9.8 m/s²). The answer is 5800 N. This is the upward gravitational force that the elephant exerts on the earth.
8 0
3 years ago
Read 2 more answers
One of two 25-year-old identical twins begins a trip on a spaceship traveling at 0.8 c while her twin remains on Earth. The twin
Readme [11.4K]
Answer 41.7 years old

I answer this question already and it was correct!
3 0
3 years ago
Each of the colors of light in the visible light spectrum has...
lara31 [8.8K]
The answer is d that might help you
7 0
3 years ago
A private aviation helicopter's main rotor blades rotate at approximately
Arisa [49]

Answer: 7.5 rev/s

Explanation:

We are given the angular velocity \omega a helicopter's main rotor blades:

\omega=450 rpm=450 \frac{rev}{min}

However, we are asked to express this \omega in the International Systrm (SI) units. In this sense, the SI unit for time is second (s):

\omega=450 \frac{rev}{min} \frac{1 min}{60 s}

\omega=7.5 \frac{rev}{s}

4 0
3 years ago
4. Who was the proponent of the Neo-classicism? a) Claude Debussy b) Joseph Maurice Ravel c) Igor Stravinsky d) Arnold Schoenber
nirvana33 [79]

Who was the proponent of the Neo-classicism?

a) Claude Debussy

b) Joseph Maurice Ravel

c) Igor Stravinsky

d) Arnold Schoenberg

4 0
3 years ago
Other questions:
  • You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive
    6·1 answer
  • We say that visible light has wavelength from 400nm to roughly 800nm. What is the biggest "energy-jump" (excited) for an atom if
    5·1 answer
  • All digits shown on the measuring device, plus one estimated digit, are considered _______.
    14·2 answers
  • What happens to the particles in water as the water is heated and turns to vapor
    15·2 answers
  • The kinetic energy of a ball with the mass of 0.5 kg and a velocity of 10 m/s is what
    14·1 answer
  • Which of these processes are chemical reactions?
    9·1 answer
  • Calculate the magnitude of the angular momentum of the earth due its daily rotation about its own axis
    13·1 answer
  • All of the celestial bodies of the solar system were said to have formed from -a nebular cloud of dust and gas -the protostar -d
    5·2 answers
  • One relationship between organisms is that of predator-prey. Which of the following is the best description of a predator?
    12·2 answers
  • Your diagram is a muscle that helps you breathe. do you think this muscle is voluntary or involuntary? Explain.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!