What is an example of convection? A. A heater in a fish tank warming the water at the bottom of the tank B. Batteries in a flashlight converting chemical energy into light C. Touching a stove and burning your hand D. Touching a stove and burning your hand

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.