Which method would be best to seperate a mixture of oil and water?

Sound is a disturbance that travels through a medium as a

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of