Asatellite is in a stable circular orbit around the earth. another satellite is in a stable circular orbit at a greater altitude must have a. a smaller speed and a shorter period. b. a smaller speed and a longer period. c. a greater speed and a shorter period. d. a greater speed and a longer period.

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