A portion of an aerospace structure has the following three-dimensional stress state, where the shear stress ( Ï„xy ) is unknown. If maximum shear stress is found to be (Ï„max = 17.64 ), determine the shear stress (Ï„xy).

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

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]

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?