Calculate the number of free electrons and holes (in m-3) in an intrinsic semiconductor that has electron and hole mobilities of 0.35 and 0.17 m2/v-s, respectively, and a conductivity of 1.7 (ω-m)-1. use scientific notation.

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].