Velocity: Torricelli's theorem, v = √(2·g·h), where h is the depth of liquid above the opening — not the full tank height. Notice velocity does not depend on density.
Range: R = 2·√(h·H), where H is the opening's height above the base. Watch closely: moving the gravity slider barely changes the range — g cancels out of this formula algebraically, even though it clearly changes the jet's velocity and fall time individually.
Pressure & flow rate: unlike velocity, hydrostatic pressure (P = ρgh) and mass flow rate both scale directly with density — a heavier liquid pushes out with more force and mass per second, even at the same speed.
Draining stops once the water surface reaches the opening — liquid below the hole has no way out.