(i)A metallic coin is given a positive charge . Does the mass (a) increase measurably,(b) increase by an amount too small to measure directly,(c) remain unchanged , (d) decrease by an amount too small to measure directly , or (e) decrease measurably? (ii) Now the coin is given a negative charge. what happens to its mass?

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].