What is it called when water forms a wedge under the tire, causing it to lose traction?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

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

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)