Which two statements are true?
-the definitions for electric force and electromagnetic force are identical.
-electric forces and magnetic forces are different aspects of a single electromagnetic force.
-the operation of a motor depends on the relationship between electric and magnetic forces.
-a magnet must be moving for a magnetic force field to exist.

The true statements are "the operation of a motor depends on the relationship between electric and magnetic forces" and "Electric forces and magnetic forces are different aspects of a single electromagnetic force.".

Explanation:

The electric force is due to the forces acting between the charges. The magnetic force is the force exerted between the magnets or moving charged particles.

The electromagnetic force is created by the magnetic field and the electric field.

The magnetic force is related to the electric force. These forces are different aspects of single electromagnetic force. The moving charge produce the magnetic force. The moving magnet produce the electric forces. The interplay of electric field and the magnetic force is the basis for motor.

Motor converts the electrical energy into mechanical energy. The operation of a motor depends on the relationship between electric and magnetic forces.

Therefore, the true statements are "the operation of a motor depends on the relationship between electric and magnetic forces" and "Electric forces and magnetic forces are different aspects of a single electromagnetic force.".

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

it would be c. predictability