Magnetic Fields
They are called domains.
The magnet.
If the iron atoms are aligned then the object is magnetic, if they are randomly oriented then it is not. How the object was manufactured may be the cause of the difference, but it always possible to intentionally either magnetize OR demagnetize an object.
Yes. Two objects with the same magnetic charge repel eachother. So an object on top of a larger, same magnetic field, then it will in effect hover. (There is a train that uses this method)
Electric and magnetic forces are transmitted via photons.
Objects masses would not change, but the pull of gravity on an object from another object when the first is inside the other is effectively zero when the inside is at the center of mass of the outer. If the Earth were a thick walled but hollow sphere, objects would stick (weakly) to the inside surface as well as the outer.
The magnet.
Yes, in general terms at least. Anything magnetized behaves as a magnet.
If the iron atoms are aligned then the object is magnetic, if they are randomly oriented then it is not. How the object was manufactured may be the cause of the difference, but it always possible to intentionally either magnetize OR demagnetize an object.
Yes. Two objects with the same magnetic charge repel eachother. So an object on top of a larger, same magnetic field, then it will in effect hover. (There is a train that uses this method)
Magnets have a magnetic field about them. This field can act on objects without the magnet coming in contact with the object.
Break-up the irregular object into regular objects by dividing the area. Sum the volumes of these regions together.
It's acceleration. It can be caused by a force (gravity, electric, magnetic or other) affecting that object.
Electric and magnetic forces are transmitted via photons.
a magnetic object are those affected by magnetic field and are attracted to it.
Objects masses would not change, but the pull of gravity on an object from another object when the first is inside the other is effectively zero when the inside is at the center of mass of the outer. If the Earth were a thick walled but hollow sphere, objects would stick (weakly) to the inside surface as well as the outer.
No, because there are no objects in C.
medal mostly yet other unidentified objects may stick such as fake silver or gold are magnetic.