To understand the electric potential and electric field of a point charge in three dimensions Consider a positive point charge q, located at the origin of three-dimensional space. Throughout this problem, use k in place of 14?

The magnitude of the electric field at distance r from the point charge q is

Explanation:

Suppose, Find E(r), the magnitude of the electric field at distance r from the point charge q.

We know that,

The electric field is proportional to the point charge and inversely proportional to the square of the distance from the charge point .

In mathematically,

Where, q = charge point

R = distance from charge point

Hence, The magnitude of the electric field at distance r from the point charge q is

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.