What is the answer to this definition ?
in the second law of motion it is mass x acceleration. the ability to apply a change in velocity on a given object.
a force
b friction
c unbalanced forces
d none of the above, tell what it is

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.