Assume that you are on a cross country flight at an altitude of 4500 feet pressure altitude and your course is 275 degrees. the outside air temperature is 10 degree celsius, your indicated airspeed is 115 knots, the wind direction is 210 degree, the wind velocity is 15 knots and you passed your last checkpoint at 0942. if you have nautical miles remaining, at what time will you arrive at your destination?

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]