The diagram below shows a cross sectional view of air circulation patterns on the surface of the Earth. Which of the following statements about the latitudes marked on the figure is the most accurate?

A. 0,30, and 90 degrees are all relatively dry latitudes

B. 0 and 60 degrees are relatively dry latitudes

C. 30, 60, and 90 degrees are all relatively dry latitudes

D. 90 and 30 degrees are relatively dry latitudes

E. 30 degrees is the only dry latitude

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]