Agoldfish is swimming at 1.20 cm/s toward the front wall of a rectangular aquarium. what is the apparent speed of the fish measured by an observer looking in from outside the front wall of the tank?

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