Consider newtonian, incompressible, steady, laminar flow of liquid rotating in annular gap between horizontal concentric cylinders. the inner cylinder is stationary, and the outer cylinder rotates at constant speed. a) derive an expression for the velocity profile in the annular gap (vθ). b) derive an expression for shear stress in the annular g

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.