Aplank of length 2l leans against a wall. it starts to slip downward without friction. show that the top of the plank loses contact with the wall when it is at two-thirds of its initial height.

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.

Your answer is 32 hope i