A lump of butter has a volume of 350cm (3) and a mass of 319 g. What is the density of the butter?

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?