Astudent at a recreation park rides in a "rotor". after the rotor reaches a period of rotation of 1.5 s, the student remains stuck on the inside wall; her feet do not touch the floor which is temporarily removed to dramatize the effect. given that the radius of the rotor is 2 m, find the coefficient of static friction between the inside wall and the student.

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.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

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