What happens in synthesis

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

Aproton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?