A long, thin, straight wire of length L has a positive charge Q distributed uniformly along it. Use Gauss' law to find the magnitude of the electric field (E) created by this wire at a radial distance r away from the wire.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up