You exerted a 12-newton force to move a desk and performed 156 joules of work. how far did you move the desk? a. 12 m b. 13 m c. 144 m d. 1,872 m

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

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?