You have a blue backpack and you look at it through blue glass. What color would the backpack appear to be? Suppose you took the same blue backpack and looked at it through red glass, what color would the backpack appear to be? Explain your answers. USE FOR MASTERY GUIDELINES & RUBRIC

Write 1-2 sentences describing what the backpack would look like through blue glass and explain why?
Write 1-2 sentences describing what the same backpack would look like through red glass and explain why?

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.