A 60 mm journal bearing, 100 mm long, supports a load of 220N at 600 rev/min. If the rotating temperature is 24°C, what viscosity of oil should be used to limit the bearing surface temperature to 60°C? Use the McKee and Lasche equations.​

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?