If the distance between a pair of electric charges is cut in half, the electrostatic force changes in size by : a factor of four
a factor of one-quarter
a factor of two
a factor of one-half

If the distance between a pair of electric charges is cut in a half, the electrostatic force changes in size by a factor of four.

Explanation:

The electrostatic force between the charges can be calculated with the Coulomb's law, that in its scalar form is given by:

Where   is the Coulomb's constant; and are the electric charges; and is the distance between the charges. From the equation above, you can establish that the force and the distance between the charges have are inversely proportional.

If the distance between the charges is cut in half, then you have:

Organizing and doing small calculations:

So, you can see that the resultant force changes in size by a factor of four.

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i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.