The relationship between the pressure P and volume V of theair ina cylinder during the upstroke of a piston in an aircompressor can be expressed as PVk=Cwhere k and C are constants. Duriny a compression test, thefollowing data was taken:P(mmHg) 760 1140 1520 2280 3040 3800V(cm3) 48.3 37.4 31.3 24.1 20.0 17.4Dtermine the values of k and C that best fit the data. numerical values and units

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.