The electrical conductivity and the electron mobility for some metal at room temperature are 5.6 × 107 (ω-m)-1 and 0.0032 m 2/v-s, respectively. (a) compute the number of free electrons per cubic meter for this metal at room temperature. n= enter your answer for part (a) in accordance to the question statement m-3(b) what is the number of free electrons per aluminium atom? assume a density of 2.7 g/cm3.

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?