g A turbulent water flow near a smooth solid boundary creates a wall shear stress of 10 N/m2. At a particular distance from the boundary, the shear Reynolds number (LaTeX: u_{\ast}y/\nuu ∗ y / ν) is 1. The local velocity at this location is:

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

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]