Sprinter set in starting blocks at the beginning of a race rely on what kind of energy conversion

How does a hydroelectric power plant converts energy into 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.

Volume is a measurement of how fast particles of a substance are moving