When Tasha positioned a steel ball at the top of the ramp, it had gravitational potential energy. The pull of gravity on the ball changed the object's potential energy to kinetic energy. Give another
example of something that has gravitational potential energy.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.