The sun shines on a 300-ft2 south-facing wall, maintaining that surface at 98°f. temperature varies linearly through the wall and is 77°f at its other surface. the wall thickness is 6 inches and its thermal conductivity is 0.04 btu/h · ft °r. assuming steady state, determine the rate of exergy destruction within the wall, in btu/h. let t0 = 77°f.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

im guessing the west of station b