# If you hold a permanent magnet the wrong way in an extremely strong magnetic f eld, its magnetization will be permanently reversed. What happens to the magnetic domains inside the permanent magnet during this process?

Answer: The domain that is aligned with the applied field will grow, while the domain that is oppositely aligned to the magnetic field will shrink, this is because permanent magnets produces their own magnetic field.

## Related Questions

The free body diagram shows a box being pulled to the left up a 25-degree incline the magnitude of the normal force is ? N

20
45
50
75

The magnitude of the normal force is  45  N

Explanation:

Correct on Edge 2021

A 0.2kg mass attached to the end of a spring is whirled in a vertical circle by a student. At some position, the mass experience a downward force of –62jN and a horizontal force 38i N. Determine its acceleration in the position.

a=363.593m/s*2   we have rectangular component of force so we first find force resultant by square both component then square root and finally divide with 0.2 kg mass

Air from the outside is: a.warmed, dried and cleaned by the nose and mouth

b.cooled, dried and cleaned by the nose and mouth

c.cooled, moistened and cleaned by the nose and mouth

d.warmed, moistened and cleaned by the nose and mouth

D.

The air in the surroundings is at a lower temperature than the body so is warmed, the mucous in the nasal cavity moistens it and the hairs trap dust and pathogens.
d.warmed, moistened and cleaned by the nose and mouth

What type of circuit has the ability to have individual parts that can be turned off without affecting the entire circuit A- open circuit
B-series circuit
C- combination circuit
D-parallel circuit

A parallel circuit

Explanation:

In a parallel circuit individual parts can be turned off without affecting the entire circuit.

A series circuit would be your answer.

The mRNA codon CCU could mutate to?

UUA, UUG, CUU, CUC, CUA and CUG
So the code CUU could mutate to CUC, CUA or CUG

A friction force of 280 N exists between a cart and the path. If the force of reaction is 766 N, what is the minimum action force needed to set the cart in motion?

force of friction on the cart is given as

here we also know the reaction force due to surface

so we can say reaction force is given as

now by force balance we will say

also we know that

now minimum force required to set this into motion

here we know that

So it will require 259 N minimum force to move it

How do humans contribute to eutrophication in both of these cases?
● Farms:
● Lawns:

The main factor is the present that causes eutrophication is the humans and their activities. The activities on the farms and the laws are just some of the numerous examples where the humans manage to cause eutrophication.

The farms can be either planet with crops or places where animals are kept and raised. If there's crops planted, than the humans use a lot of fertilizers. The fertilizers have mostly high concentrations of nitrogen, potassium, and phosphorus. Big portion of them end up in the groundwater and or the streams, rivers, and other water bodies. If there's animals on the farm, the waste from the animals ends up in the water bodies. Those two things manage to significantly increase the nutrients in the waters and cause eutrophication of it.

The lawns also require some fertilizers, and in the same manner as in the farms they often end up in the water bodies. Also, when the lawns are cut, the grass that has been cut usually finds its way in the water bodies, thus resulting in increased nutrition of the water bodies, thus eutrophication.

What is the main organ in the respiratory System?

The major organs of the respiratory system are the lungs
The main organ of the respiratory system is Lungs.

The Bohr model of the hydrogen atom pictures the electron as a tiny particle moving in a circular orbit about a stationary proton. In the lowest-energy orbit the distance from the proton to the electron is 5.29 x 10-11 m, and the linear speed of the electron is 2.18 x 106 m/s. a) What is the angular velocity of the electron? b) How many orbits about the proton does the electron make each second? c) What is the electron❝s centripetal acceleration?

a) The angular velocity of the electron is

b) The number of revolutions per second is rev/s

c) The centripetal acceleration of the electron is

Explanation:

a)

This is a problem of uniform circular motion: in fact, the electron orbits around the proton in a uniform circular motion.

The angular velocity of an object in uniform circular motion is given by

where

v is the linear speed

r is the radius of the trajectory

For the electron orbiting around the proton, we have

Therefore, the angular velocity is

b)

The period of revolution of the electron is given by

where

is the angular velocity

Substituting,

The period is the time the electron takes to make one complete orbit around the proton; therefore, the number of revolutions of the electrons in one second is:

rev/s

c)

The centripetal acceleration of an object in circular motion is

where

v is the linear speed

r is the radius of the circle

For the electron, we have

Therefore, the centripetal acceleration is