Along, straight, cylindrical wire of radius r carries a current uniformly distributed over its cross section. at what location is the magnetic field produced by this current equal to half of its largest value? inside the iwre

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