You are trying to make a filter to allow you to tune to an amplitude-modulated (AM) radio station. The station you want to listen to is broadcast at LaTeX: 1440\text{kHz}1440 kHz. What type of filter would you use on your antenna to get this signal

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]