Wich factors affect the electrical force between two objects?

The strength of the charge and the distance between the two bodies.

Explanation:

According to coulombs law, electrical force is calculated as follows:

F = k (Q1 ×Q2)/ d²

where Q1 and Q2  represents the amount of charge between the two bodies while d is the distance between then.

This means the electrical force is directly proportional to the electrical charge of the bodies and inversely proportional to the square of the distance between them.

Bodies with high amounts charges will have stronger electrical forces between them than bodies with less electrical charges.

Charged bodies near each other will have stronger electrical forces between them than bodies far apart.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form