Determine the heat loss per hour from a wall of a build- ing when the wind is blowing parallel to its surface with a speed of 2 km/hour. the wall is 5 metre long and 3 metre high. tempe rature of the wall is 25°c and air temperature is 5°c.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

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

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure