There is a vertical curve. The grade into the curve -3.6% and the grade out of the curve is 4.4%. If the design speed is 60 mph, calculate the minimum required length for the vertical curve based on stopping sight distance (Hint: Find the stopping sight distance for the design speed of 60 mph first and then use formula in the textbook to calculate minimum length for the vertical curve).

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.