The nucleus of a 125xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. it has 54 protons and charge q=+54e (1 fm = 1 femtometer = 1×10−15m.) hint: treat the spherical nucleus as a point charge. part a part complete what is the electric force on a proton 1.0 fm from the surface of the nucleus? express your answer in newtons. fnucleusonproton f n u c l e u s o n p r o t o n = 780 n submitprevious answers answer requested part b what is the proton's acceleration? express your answer in meters per second squared.

A:

B:

Explanation:

Given:

Part A:

Coulomb's law states that the electric field due to a charged sphere of charge Q at a point r distance away from its center is given by

where, k = Coulomb's constant whose value =

Therefore, the electric field due to the nucleus at the proton is given by

Therefore,

The electric force on a charge q due to an electric field is given as  

For the proton,

Thus, the electric force on the proton is given by

Part B:

According to Newton's second law,

where, a is the acceleration.

The mass of the proton is

Therefore, the proton's acceleration is given by

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