D. assume qualified is already declared. code a fall-through switch statement that will print the following messages: when qualified is 1 and 2: you are a student or teacher and you get a 10% discount. when qualified is 3 and 4: you are a senior citizen or military and you get a 12% discount. when qualified is any other value: sorry, youre not eligible for a discount.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater