Distance, how will it change the force of attraction between them?

What will a positive and a negative charge do if they are separated from each other?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

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].