In the equation for the gravitational force between two objects "d" quantity must be squared.
<u>Answer:</u> Option D
<u>Explanation:</u>
The force that attracts two objects with mass is called as gravitational force. This has been explained by "Newton's Universal Law of Gravitation" which says "In this universe every single particle attract every other particle with a force which directly proportional to the product of their masses while inversely proportional to the square of the distance in between them. "
The gravitational force between any two objects with masses can be calculated by given formula:
F = G (m1 . m2 / d^2)
Here the F is gravitational force,
G is the gravitational constant = 6.67 × 10^-11
m1 and m2 are the masses of the two objects
d^2 also represented as r^2 is the distance between two objects.
The molecules of air inside of an inflated balloon are very far apart and moving rapidly. They collide with other molecules and with the inside surface of the balloon. Collisions between gas molecules are perfectly elastic.
The answer to your question is A., as the random movement is a movement
