Explanation:
Newton's law of universal gravitation states that every object attracts every other object with a force. For any two objects, this force is directly proportional to the mass of each object. The greater the masses, the greater the force of attraction between them. Newton also deduced that this force decreases as the square of the distance between the centers of the objects increases. The farther away the objects are from each other, the less the force of attraction between them.
If the point charge is placed at point 
is equal to 
.
<h3>
Electric field inside a conducting cubic shell</h3>
The electric field inside a conducting cubic shell is zero. When a point charge is placed outside the shell, the electric field outside the shell is greater than the electric field inside the shell which is zero.
We can deduce the following;
- Electric field inside the shell is zero, thus
- Electric field outside the shell is greater than electric field inside the shell
Thus, the only correct statement is, If the point charge is placed at point is equal to .
Learn more about electric field inside a shell here: brainly.com/question/539905
Quartzite is produced when grains of quartz in sandstone are welded together when the rock is subjected to high temperatures. Quartzite<span> or Quarzit is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone. </span><span>It is formed when a quartz-rich sandstone is altered by the heat, pressure, </span>
