What happens to the volume when temperature is held constant and the pressure is increased to 125 kpa

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

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.

When doing scientific research ,the sources used should be ?