Fundamental constants: e 1.60 x 1019 c - elementary charge me 9.11 x 1031 kg - electron mass 1. the intrinsic concentration of charge carriers in crystalline germanium is 2.0 x 1019 m3. the mobility of electrons is ue = 0.39 m2/(v s) 0.19 m2/(v s). ni and the mobility of "holes" is h (a) estimate the relaxation time t for electrons in crystalline germanium. (b) calculate the electric conductivity of crystalline germanium. (c) calculate the resistance r of a cylindric rod made of crystalline ger- manium that has diameter d = 5 mm and length 20 mm.

your answer is c! hope this : )

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!