If the mass of the actor is 60 kg and the mass of the sand bag is 80 kg, what is the magnitude of acceleration of the actor?

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

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge

If the pressure in a gas is doubled while its volume is held constant. true or false