A 6.7 mass attached to a string is whirled in a horizontal circle of radius 87 cm (0.87m). If the string has a breaking strength of 587 what is the maximum speed at which the mass can be whirled around before the string breaks?

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