Sample A has 12 protons, 13 neutrons and 12 electrons. Sample B has 12 protons, 12 neutrons and 10 electrons. Are these two samples isotopes of one another? Explain how you know
Are either of these two samples ions? Which one(s)? Explain how you know

Divide 108.2 x 10^6 into 1.5 x 10 and the result will be in au (astronomical units)

Ithink it is letter b, i may be wrong but i think that is the answer

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.