In the apparatus, the Dynamic Aqua Crusher, water is injected into a vertical channel at a volume flow rate Q. The diameter of the channel at point 1 is d, and its diameter at point 2 is D. To the right of point 2 is a horizontal channel blocked by a stopper. The small diameter of this horizontal channel is d, and the large diameter is D. To the right of the stopper is a chamber with static water. When the stopper is clamped in place by a screw, the pressure in the chamber is p0. When the clamp is unscrewed, the stopper is free to move. At the right-hand end of the chamber is a ram that can be used to crush things against a wall. Let be the density of water, p1 be the pressure at point 1 in the vertical channel, and H be the vertical distance between points 1 and 2. You may assume that p1 > p0.