Which of the following is the best description of conduction? A. the process of changing from a gas to a liquid or from a liquid to a gas B. the emission of energy in the form of rays or waves that can travel through empty space C. heat transfer in a gas or liquid by the circulation of currents from one region to another D. the transmission of heat through a medium without the motion of the medium

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

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology