Which of the following is NOT a fundamental force?

A force of attraction between objects that is due to their masses

the interaction of electric currents or fields and magnetic fields

the attraction or repulsion between electric charges

the attraction or repulsion between magnetic poles

region of space in which an object will experience a non-contact force

a magnet that runs on electricity whose strength can easily be changed by changing the amount of electric current that flows through it

a device that converts electrical energy into mechanical energy

the amount of matter in an object

A measure of the force of gravity on an object

an attractive force that acts between any two masses

ways in which matter and fields can affect objects

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