The atoms of a metalloid have 6 valence electrons. the metalloid is used as a semiconductor. which best describes the electron shell in which the valence electrons are located?

a. the electron shell should be small so that electrons are more easily gained.
b. the electron shell should be large so that electrons are more easily gained.
c. the electron shell should be small so that the electrons are more easily lost.
d. the electron shell should be large so that the electrons are more easily lost.

Which type of circuit is becoming more common in residential electrical design and construction? a. hazardous-area circuit b. three-phase circuit c. 480-volt circuit d. communication circuit

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?