In an experiment, a cylindrical tube heat exchanger is developed to condense steam to water. On the outside, steam condenses at a constant temperature of 15 oC. On the inside, cold water (7 oC) flows into the tube with a mass flow rate of 0.2 kg/s, and you measured an exit temperature of the water to be 10 oC. The external surface area of the tube is 0.3 m2 . a. What is the overall heat exchanged Q [W] between the cold fluid and the steam