The steel structure is composed of a hollow tube with an outer diameter of 10 in. and a wall thickness of 0.5 in. Take ft and The steel has a uniaxial yield strength of 36 ksi. If the load F0 2500 lb, determine the factor of safety for yielding at the base, assuming a von Mises yield criterion.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.