If the density and volume of an object is known, what can also be found?

the mass of the object
the shape of the object
the size of the object
the thickness of the object

Does the energy in a solid increase or decrease when changing to a liquid?

Which statement is best described as a atom

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!