The internal resistance of a battery is relatively small when the battery is new but increases as the battery ages. When a new 12.0-VV battery is attached to a 100 ΩΩ load, the potential difference across the load is 11.9 VV. After the circuit has operated for a while, the potential difference across the load is 11.2 VV .By how much has the internal resistance of the battery changed?

The objects are acted upon by only one force. gravity. mass times the acceleration of gravity (-9.81meters/second squared).

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.

Idon't get it? what do you mean by playing 17 hours on the wii

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