Def sum_goal_buggy(my_list, goal): """ :param my_list: list of numbers :param goal: goal to be added up :return: True if some sublist adds to goal, False else """ if goal == 0: return True else: # ignore my_list[0] if sum_goal_buggy(my_list[1:], goal): return True # include my_list[0] in the sum elif sum_goal_buggy(my_list[2:], goal + my_list[0]): return True return False

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