You are an astronaut floating in DEEP space (very little gravity). If you come upon a small metal object, what can you do to test if the object has MORE or LESS mass than you? What would happen? Explain

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