1 Sketching 1.1 Make a quick sketch, in the x-y plane, of the following (two-dimensional) vector function. Plot enough different vectors to give a feeling for what this field looks like in the x-y plane. y (a2 + 72) 3/2 5x+ (a2 + 12)3/2 y 1.2 Explain briefly in words what this plot is showing. Is it physically realizable as an electrostatic field? 1.3 Do the same as above for the field: (2 coser + sin 80) /73 (Here, I am assuming we are in 3-D spherical coordinates, but there is no azimuthal depen- dence. How should you "sketch" this?) Where have you seen this field before