Determine the wall loading that can be carried by a long footing 1.2 m wide and located 1.5 m below the ground surface. Strength testsindicate that the soil has a cohesionof 58 KN/m3and angle of internal friction of 20O. The total soil unit weight is 19 KN/m3. The soil above the footing is well compacted, and depth factor will apply. The soil rigidityindex is greater than the criticalindex. Use a factor of safety to 3 with the extended generalbearing capacity equation,

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2