How are scientific theories different than laws or hypotheses? theories can be changed to better fit new evidence theories can remain the same over hundreds of years theories can be proven beyond any doubt or questioning theories can develop without any supporting observations

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.