Write an expression for the output voltage of an AC source that has an amplitude of 17 V and a frequency of 160 Hz. (Use the following as necessary: t. Assume V is in volts and t is in seconds. Assume V = 0 and dV/dta = 0 when t = 0.) V = 27 sin ( 270πt)

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