The free stream water temperature in the laminar boundary layer is t=25 °c. the temperature of the wall is tw 24°c. the velocity of water is 0.6 cm/s, distance from leading edge is 20 cm. determine the lo length x. hint: use the properties of water at 25°c and pr=6.21

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

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