An n-type semiconductor is known to have an electron concentration of 3 ' 1018 m-3. If the electron drift velocity is 100 m/s in an electric field of 500 V/m. Calculate the mobility and conductivity of this material

What human behaviors (actions) contributed to past pandemics

Coils of various dimensions designed to introduce specified amounts of inductance into a circuit are called (a) semiconductors (b) superconductors (c) electromagnets (d) inductons

cement content: 7.0 sacks/yd3 water-cement ratio: 5.08 gal/sack cement specific gravity: 3.15 fine-aggregate specific gravity: 2.65 coarse-aggregate specific gravity: 2.

The correct statement about the relation between the shear stress (force) at the surface for laminar and turbulent flow over a flat plate is. a. The laminar shear stress is greater because the fluid viscosity is not important in turbulent flow. b.

You are comparing distillation column designs at 1 atm and 3 atm total pressure for a particular separation. You have the same feed in both cases, and the feed is a saturated liquid in both cases.

Work done by a system during a process can be considered as a property of the system. a) True b) False

When the compression process is non-quasi-equilibrium, the molecules before the piston face cannot escape fast enough, forming a high-pressure region in front of the piston. It takes more work to move the piston against this high-pressure region.

hypothetical A-B alloy of composition 40 wt% B-60 wt% A at some temperature is found to consist of mass fractions of 0.66 and 0.34 for the α and β phases, respectively.

10. Which of these requires a wheel alignment after replacement? A. Struts B. Shocks C. Both

What is the definition of diameter pitch?