Objects 1 and 2 attract each other with a electrostatic force of 18.0 units. If the charge
of Object 1 is doubled AND the charge of object 2 is tripled, then the new electrostatic
force will be units.

new force is 6 times of the initial force.

Explanation:

Let the charges on two objects is q₁ and q₂. The electric force between charges is given by :

Objects 1 and 2 attract each other with a electrostatic force of 18.0 units

If the charge  of Object 1 is doubled and the charge of object 2 is tripled, it means, and . New force is given by :

So, the new electrostatic force between objects will become 6 times of the initial force.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )