Two forces act on a wooden block, one to the right of 3N and the other to the left of 5N. A. What is the magnitude of the resultant force on the block?

B. Show the direction of the resultant force on the block?

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

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

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