Which design principle element indicates the appearance of the surface of a building?
is the appearance of the surface of a building.

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk

Does the hardness of a sheet metal have an effect on its springback in bending? explain.

Glass-ceramic is a fine-grained crystalline ceramic formed by the controlled crystallization of a ceramic. ( true , false )