Help with A,B, and C?
1 Divergence The divergence of a vector field F as in (1) is defined as dÃv F =-+-+- All of the terms in (2) are functions of (r,y, z), which we have omitted to keep the notation brief. Also note that while F is a vector function, its divergence div F is a simple function of three variables, sometimes called a scalar field (as opposed to a vector field). In situations where F(x, y,z) describes the flow of a physical quantity div F can be interpreted as the local flur of the field, measuring how much of the quantity is flowing away from the point (r, y,z) (which is the case if div F(x, y, z) > 0) or into the point (if div F(x, y, z) 0)