According to the video, what are some tasks Environmental Scientists and Specialists perform? Check all that apply. A) performing lab and field tests
B) designing and monitoring waste-disposal sites
C) observing zoo animals
D) reviewing volunteer applications
E) tending sick animals
preserving water supplies
O reclaiming contaminated land and water

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]