An 02-series single-row deep groove ball bearing with a 35 mm bore is loaded with a 3 kN axial load and 5 kN radial load. The inner ring rotates at 550 rev/min. a. Determine the equivalent radial load that will be experienced by this particular bearing. b. Determine the predicted life that this bearing could be expected to give in this application with a 99 percent reliability.

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]