Avehicle's right-front wheel hub gets hot after a short drive. technician a says that incorrectly adjusted wheel bearings could be the cause. technician b says that over-tightened lug nuts could be the cause. who is right?

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.