The drawing shows two blocks that are placed at the ends of a massless board. the board is balanced on a support that serves as an axis of rotation. the block on the left has a mass of 6.5 kg. what is the moment of inertia of this system about the axis of rotation?

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