If we know the total energy in a system is 30 j, and we know the pe is 20 j. what is the ke?
show your work.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

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.