1. What is the magnitude of the force on a charge of +40 μC that is 0.6 m from a charge of - 80 μC?

The magnitude of the force is 79.893 N.

Explanation:

The magnitude of the electrostatic force between the two particles is determined by Coloumb's Law, whose formula is:

(1)

Where:

- Electrostatic constant, in newtons-square meters per square coulomb.

- Electric charges, in coulombs.

- Distance, in meters.

If we know that , , and , then the magnitude of the force is:

The magnitude of the force is 79.893 N.

the part of the wave he is travelling on is the crest

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