Awire is carrying a current which is flowing east to west. which way will a compass needle point if it were placed in front of the wire?

north

compasses always point north. That's their job.

coil wire, increase current, put iron inside the coil

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.