Which example possesses mechanical potential energy? . a. a taut guitar string. b. an oscillating pendulum. c. a roller coaster ride. d. a child on a swing. e. a speeding car

The taut guitar string haspotencial energy which we can see in action.  · so option a is correct.

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.