Alocal 1 mhz am radio station from davis wants to broadcast 24 hours a day of the hit show "cow talk" to cities west of davis (vacaville, dixon, suisun, however, they do not want to waste power broadcasting to sacramento because people there aren't into cows. assume that the radio station is using two 3 m tall towers. but reflections from the ground cause the towers to appear 6 m tall electrically. also assume that the current is uniform along each tower length. (a) show that the two towers should be separated by 75 m and be driven 90° out of phase to produce a pattern (called a cardioid) with a single null to the east. (b) should the eastem dipole lead or lag?