Use Eqs. (4.5) and (4.6) to determine the moment of the 20-N force about (a) the x axis, (...

Use Eqs. (4.5) and (4.6) to determine the moment of the 20-N force about (a) the x axis, (b) the y axis, (c) the z axis. (First see if you can write down the results without using the equations.)