A mineral forms in water heated by magma inside Earth. Which statement best describes this mineral?

A. The mineral formed through evaporation.
B. The mineral crystallized from molten material.
C. The mineral formed when a hot water solution cooled.
D. The mineral likely has all the same properties as the surrounding rock.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.

Suppose an object in free fall is dropped from a building. its starting velocity is o m/s. what is the speed (in m/s) of the object falling after 2 seconds?