3. Water in a very large cylindrical tank open to atmosphere with Dtank in diameter discharges into vacuum through a small nozzle at the bottom with diameter Dexit Neglecting friction and the unsteadiness of the flow, find the time required for the tank (height H) to get empty.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

The results of huy's eye exam show that he is nearsighted. which explanation should huy expect to hear? "you need convex lenses to shorten the distance that light takes to focus in your eyes." "you need concave lenses to shorten the distance that light takes to focus in your eyes." "you need convex lenses to lengthen the distance that light takes to focus in your eyes." "you need concave lenses to lengthen the distance that light takes to focus in your eyes."

When you notice something that is happening, what are you making? a. an observation b. a law c. a theory d. an experiment