Which theory of plate movements involves magma rising all the way from the lower mantle to spread apart plates

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

Acircular ring of charge with radius b has total charge q uniformly distributed around it. what is the magnitude of the electric field at the center of the ring? 0 keq/b2 keq2/b2 keq2/b none of these answers

Describe the three ray tracing steps used to identify an image for the given situation.