A 4.0 kgkg, 36-cmcm-diameter metal disk, initially at rest, can rotate on an axle along its axis. A steady 3.5 NN tangential force is applied to the edge of the disk. Part A What is the disk's angular velocity, in rpmrpm, 4.0 ss later

30 points - 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