The gravitational force produced between any two object kept 2.5*10^4 km apart is 580N. at what distance should be the kept show the gravitational force becomes half.

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.