What is the magnitude of the force required to stretch a 20 m-long spring, with a spring constant of 100 N/m, to a length of 30 m?

Alkaline earth metals are found in group 2 of the periodic table.

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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.