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
Helen [10]
3 years ago
5

A magnet is

Physics
1 answer:
pshichka [43]3 years ago
6 0

Answer:

A)an object whose electrons can be aligned in the same direction

Explanation:

Those materials produce magnetic field is known as magnet materials.A magnet is a object whose electrons are aligned in the same direction.

All ferromagnetic materials are magnetic materials. The examples magnetic materials are Co (Cobalt),Ni (Nickel) etc.We know that magnetic filed are produce by the current.

You might be interested in
A rod of mass M = 2.95 kg and length L can rotate about a hinge at its left end and is initially at rest. A putty ball of mass m
madam [21]

Answer:

Explanation:

angular momentum of the putty about the point of rotation

= mvR   where m is mass , v is velocity of the putty and R is perpendicular distance between line of velocity and point of rotation .

= .045 x 4.23 x 2/3 x .95 cos46

= .0837 units

moment of inertia of rod = ml² / 3 , m is mass of rod and l is length

= 2.95 x .95² / 3

I₁ = .8874 units

moment of inertia of rod + putty

I₁ + mr²

m is mass of putty and r is distance where it sticks

I₂  = .8874 + .045 x (2 x .95 / 3)²

I₂ = .905

Applying conservation of angular momentum

angular momentum of putty = final angular momentum of rod+ putty

.0837 = .905 ω

ω is final angular velocity of rod + putty

ω = .092 rad /s .

4 0
4 years ago
As frequency increases, what happens to the tone (or pitch) of a sound? Which option is it?
icang [17]

Answer:

gets higher

Explanation:

There are videos that show the range of human hearing.  If you would play the video, you would notice that if the frequency increases, the pitch would also increase.

3 0
4 years ago
A 30kg bucket of water is lifted vertically 3.0m. How much work was done on the bucket during this movement
Alex

Answer:

Explanation:HELPPPPPPP

3 0
3 years ago
Read 2 more answers
A car is traveling in a circular curve on a horizontal road at constant speed. Name the force that is responsible for causing it
I am Lyosha [343]
The correct answer is
<span>c the friction force from the road 

In fact, the friction force between the road and the tires prevents the car from "sliding away" in a straight line and keeps it in circular motion, acting as centripetal force.</span>
4 0
4 years ago
Which missing item would complete this beta decay reaction?
Flauer [41]
For us to understand the missing item that would complete beta decay reaction, we need to achieve in depth understanding of chemical formulas and nuclear symbols. Next is to have great comprehension of the following points:
<span>1.) Neutron in nucleus breaks down and changes into a proton.
2) Then it emits an electron, as well as an anti-neutrino which go into space.
3) Lastly, atomic number continuously goes UP while mass number remains unchanged.</span>
8 0
3 years ago
Other questions:
  • Why are objects that fall near Earth's surface rarely in free fall?
    11·1 answer
  • Use newton's method to find the second and third approximation of a root of
    8·1 answer
  • What is Virtual Lab and what does people use it for and why they use it?
    6·1 answer
  • Physical science semester B exam 66 problems , please don’t delete I’m on my last leg I need this please god help me
    11·1 answer
  • Which contributes to the lack of evidence of the Period of Heavy Bombardment on Earth? A. Earth's volcanoes B. Earth's magnetic
    5·2 answers
  • A kicked ball rolls across the grass and eventually comes to a stop in 4.0 sec. When the ball was kicked, its initial velocity w
    10·1 answer
  • Shanti is riding on a train that is moving at a speed of 90 km/h. He is carrying a power cord for his phone that is 1.2 m long.
    9·2 answers
  • The use of force to move an object is BLANK .
    5·2 answers
  • The Escape speed at the surface of a certain planet is twice that of the earth. what is its mass in unit of earth's mass?
    11·1 answer
  • In the Roman soldier model for refraction, what happens to the distance between the rows of each soldier once they enter the str
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!