6.Agearbox operating at steady state receives 20 horsepower along its input shaft，delivers power along its output shaft，and is cooled on its outer surface according to Q = - h A (Tb - T0 )，where=110°F is the temperature of the outer surface and T。= 40°Fis the temperature of the surroundings far from the gearbox. The product of the heat transfer coefficient h and outer surface area A is35 Btu/h*R. For the gearbox, determine the power delivered alongthe output shaft，the rate of availability transfer accompanying heat， and the irreversibility rate, each in Btu/h. Express each quantity as a percentage of the input power.