Centre of pressure of tidal flap valve given by formula: 2D Centre of presure (CP) = 3 The pressure going through the valve changes exponentially with the depth of the water | We are given this formula for the system. P + AP2 P -pg.dh e k P1 = initial pressure at the top of the fluid column P2 = final pressure at the top of the fluid column A = cross-sectional area of the fluid column P density of the fluid = g = acceleration due to gravity dh = change in height of the fluid column e = coefficient of discharge of the bleed valve k = discharge coefficient of the bleed valve QUESTION - Use these formulas to deduce a formula to show how the pressure changes.