Aboiler in a steam power plant has an efficiency of 30% by using fuel with calorific value of 38 mj/kg and produces 320 kg/hr of steam at 800 kpa and 800°c, respectively. this steam power plant consists of two turbines i. e. high pressure and low pressure turbines. the steam flow through the high pressure turbine from the boiler and leave at 100 kpa before it is reheated to 2500°c. after that, the steam enters the low pressure turbine until its pressure dropped to 4 kpa. the steam is cooled in a condenser by water from cooling tower whose specific heat is 4.18 kj/kg. k and inlet and outlet temperature of 25 c and 48 c, respectively if the work done by the feed pump is negligible and the turbine efficiency assumed to be 100%, determine: 1)-net power output of this steam power plant in (kwh), 2)-mass flow rate of fuel into the boiler (in kg/s) 3)-the mass flow of water in condensor (in kg/s) 4)-the thermal efficiency of the cycle in percentage