Object a attracts object b with a gravitational force of 5 newtons from a given distance. if the distance between the two objects is reduced in half, what will be the changed force of attraction between them?

20 N

Explanation:

The gravitational force between the two objects is given by:

where

G is the gravitational constant

mA and mB are the masses of the two objects

r is the separation between the two objects

In this situation, we have that the distance between the two objects is reduced in half. Let's call the new distance

So the new gravitational force F' will be

So, the force increases by a factor 4, therefore the new force will be

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete