A piece of steel is shaped like a peripheral perimeter with dimensions of 1.5dm, 2dm and 1dm. It is known that the bar weighs 50N. Calculate its maximum and minimum pressures.

Could someone me find the answer to this problem.

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

It is really hard for me right know