Wanda has a cube of sugar. She crushes it into a powder. What has changed about the sugar?

a. shape
b. volume
c. shape and mass
d. volume and mass

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