Design a payroll class that has fields for an employee’s name, id number, hourly pay rate, and number of hours worked. write the appropriate accessor and mutator methods and a constructor that accepts the employee’s name and id number as arguments. the class should also have a method that returns the employee’s gross pay, which is calculated as the number of hours worked multiplied by the hourly pay rate.

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.