A 2.0 kg plastic cart and a 20 kg lead cart can roll without friction on a horizontal surface. Equal forces are to push both carts forward for a time of 1 s, starting from rest. After the force us removed at t = 1 s, is the momentum of the plastic cart greater than, less than, or equal to the momentum of the lead cart? Explain.

Inner peace.. jk it's  a stable electron configuration

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.

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to move. 

  the answer is don't know.