Which ray diagram correctly illustrates what happens when light is incident from air onto a flat glass surface? The dotted line represents the normal.
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grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular