N the Spring of 2015, three utility companies in the Ukraine received email purporting to come from Ukraine's parliament, the Rada. It was addressed to employees that were used to receiving communications from the Rada dealing with utility regulations. The email included an attached Microsoft Excel spreadsheet with malicious Macros. This was an example of what kind of attack

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