In ambient air at tinf= 35°c for the following configurations: or the tollowing configurations: a)-calculate the total heat transfer (q) from a building with four equally-sized 30m-tall and 15m-wide vertical walls. after sunset, one of the walls is 45°c, and the other three are at 40°c. the roof is 15m by 15m, at a temperature of 50°c.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.