Which explains earthquakes and volcanic eruptions?

global positioning theory
lithospheric theory
plate tectonics theory
nebular theory

An artificial satellite circles the earth in a circular orbit at a location where the acceleration due to gravity is 6.03 m/s^2. determine the orbital period of the satellite.

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?