Steam moves into the cylinder of a steam engine at a constant pressure and does 0.60 j of work on a piston. the diameter of the piston is 1.8 cm, and the piston travels 2.3 cm in one stroke. what is the pressure of the steam?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)