3. A steam turbine uses the ideal Rankine cycle. The boiler outputs steam at 3.5 Mpa, 500 C, and 90 kg/s. The condenser operates at a pressure of 100 kPa. What is: a. the thermal efficiency of the cycle? b. the rate of heat transfer to the steam passing through the boiler? c. net power out? d. mass flow rate of the condenser cooling water if the it undergoes a 20 C increase