A "12V" car battery has an emf of 12.6 V and internal resistance of 70.0 m. The car's headlights each have an operating, or "hot," resistance of 2.60 , and the starter motor draws a current of 85.0 A. (a) Are a car's headlights and starter motor wired in series or parallel? How do you know? (Hint: what happens when a headlight burns out?) (b) Using your answer from part (a), find the equivalent resistance of the headlights. (c) What is the potential difference across the headlights when they are the only draw on the battery? (d) What is the potential difference across the headlights when the starter motor is running? (It may help to draw a circuit diagram.) (e) By what percent do the headlights dim when the starter runs? Assume that the brightness is proportional to the power they draw