Aspace station, in the form of a wheel 124 m in diameter, rotates to provide an "artificial gravity" of 2.80 m/s2 for persons who walk around on the inner wall of the outer rim. find the rate of the wheel's rotation in revolutions per minute that will produce this effect.

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