In many metal machining operations (cutting or turning) the contact surface at the interface of the tool and metal part is cooled by a liquid coolant that is delivered on the surface by a single round jet. Water at 25°C is used as coolant in one such jet-cooling system, and it flows at the rate of 0.01 kg/s through a circular nozzle with a diameter of 3.0 mm. Determine the average heat transfer coefficient and the rate of cooling from a 5 mm region on the surface of the part being machined. The surface temperature in this area is at 40°C.