Assume the following situation: Two magnets are isolated from two charges. The two magnetic poles are close to each other and the two electric charges are close to each other. What evidence is there that the potential energy stored in the fields of both the magnets and the charges will convert to kinetic energy directly? a)Both the magnets and the charges will become warmer the closer they are to each other.

b)Both the magnets and the charges will start to move, either away from each other or towards one another.

c) Both the magnets and the charges will experience a change in fields due to their presence to each other.

d)Both the magnets and the charges will not experience a net force from each other.

(serious answers only or you will be reported. Thanks to those who help).

Both the magnets and the charges will start to move, either away from each other or towards one another. (Just for help not for cheating).

Explanation:

a)Both the magnets and the charges will become warmer the closer they are to each other.

b)Both the magnets and the charges will start to move, either away from each other or towards one another.

c) Both the magnets and the charges will experience a change in fields due to their presence to each other.

d)Both the magnets and the charges will not experience a net force from each other.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.