If the lattice constant of silicon is 5.43 å, calculate ( a ) the distance from the center of one silicon atom to the center of its nearest neighbor, ( b ) the number density of silicon atoms (#/cm 3 ), and ( c ) the mass density (g/cm 3 ) of silicon

Which property of fossils allow scientists to determine the relative rock ages..

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Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.