Give an example of a situation in your life in which you depend on adequate
testing and evaluation in a product
design to keep you safe.

What is created when solids,liquids,an gases mix with one another

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?