Determine the moment about the origin o of the force f=(13)i + (-12)j + 14(k) that acts at a point a. assume that the position vector of a is r=2i+3j-4k. the moment about the origin of the force f is ()i+()j+()k

Two waves maximally constructively interfere at a point in space. among the options below, select the possible value of their phase difference at that point in space.a. zerob. πc. π/2d. not determinable by the information provided