Some of the materials used as semiconductors have a resistance almost halfway between that of glass (____________________) and copper (conductor).
Fill in the blank(s) with the appropriate word(s).
insulator
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_____ brick is intended to support pedestrian or light vehicular traffic.
A. Thin B. Building C. Facing D. Paving
Soil nailing refers to
A) a cut face of excavation supported by closely spaced steel bars and shotcrete over WWR. B) a cut face of excavation supported by closely spaced steel bars and shotcrete. C) a cut face of excavation supported by closely spaced steel bars in grouted holes and shotcrete over WWR. D) a cut face of excavation supported by closely spaced steel bars or angles. E) none of the above.
Consider a 20-cm-thick granite wall with a thermal conductivity of 2.79 W/m•K. The temperature of the left surface is held constant at 50°C, whereas the right face is exposed to a flow of 22°C air with a convection heat transfer coefficient of 15?W/m2•K. Neglecting heat transfer by radiation, find the right wall surface temperature and the heat flux through the wall.
What did western monarchs strive to achieve in the mid-fifteenth century as they reformed their state bureaucracies?
a. the end of serfdom b. the destruction of the nobility c. to centralize authority under their control d. independence from the papacy