Along wire is known to have a radius greater than 10.0 mm and less 20 mm, carry a current uniformly distributed over its cross section. if the magnitude of the magnetic field is 3 mt at a point 6.0 mm from the axis of the wire and 1.50 mt at a point 20 mm from the axis, what is the radius of the wire?

When can a theory be modified if a new type of technology allows for new observations that raise new questions? a-immediately, while the questions about the theory are being asked b-after new hypotheses related to the theory are tested in experiments c-only after the new observations disprove all parts of the theory d-while scientists begin to think about how the theory could improve