A square aluminum plate mm on a side and mm thick and is heated uniformly to C. The plate is vertically suspended in quiescent air at C. Neglect contributions of side surfaces of the plate in convection and radiation calculations. (B) Calculate the net convective heat transfer loss rate from both vertical surfaces of the plate to the air. (Hint: h values should be the same for both surfaces of the vertical plate) (C) Calculate the net radiation heat loss rate to a very large environment at C. Assume it is a two surface enclosure and all surfaces are gray and diffuse. . Do you think you can neglect the net radiation heat loss rate

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.

Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.

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