Adiver swims in a pool that is 30 m deep. the diver swims 20 m above the bottom. if the diver descends to 10 m above the bottom, what is the absolute pressure?

an electric circuit

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.