if the path of the alpha particles is horizontal, and counterclockwise as seen from above (at one point in its path it will be travelling northward on the eastern edge of the circle) in what direction must the magnetic field be pointed (north, south, east, west, up, or down)? explain why

The answer is a 0.64 volts

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.hope my answer has you : )

The sun's gravitational pull is weaker on the planets that are closer to it, i think.