Calculate directly the line integral 6a ds of the vector a--y + xy around the closed path in the xy plane with straight sides given by: (0, 0) (3, 0) (3,4) (0,4) (0,0). also calculate the surface integral of v x a over the enclosed area and show that (1-67) is satisfied.

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

One splits the atoms and molecules  the other combines them