A steel beam 12.0m sits next to a concrete wall when the temperature is 20.0°C. A gap must be lift between the beam and the concrete wall for expansion purposes. if the temperature rises to 43.0°C. How large must be the gap be if the steel beam just touches the concrete wall? ( a steel = 12 x 10-⁶/)​

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.