what is the radius of a circular space station that spins with a linear speed of 90.0 m/s in order for its walls to supply a centripetal acceleration equal to the acceleration provided by gravity on the surface of the earth?

c

explanation:

i believe the answer is c and this is only worth 10 points you might wanna change it

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.