1. The problem statement, all variables and given/known data: Water flows through a fire hose of diameter 7.15 cm at a rate of 0.019 m3/s. The fire hose ends in a nozzle of inner diameter 2.17 cm. What is the speed with which the water exits the nozzle? 2. The attempt at a solution: So, I tried using Principle of Continuity: A1 * v1 = A2 * v2 A = pi * d^2 / 4 A1 = 0.00402 m A2 = 0.00037 m A1 * v1 = A2 * v2 (0.00402 m) * (0.019 m^3/s) = (0.00037 m) * v2 0.0000764 m^4/s = (0.00037 m) * v2 v2 = (0.0000764 m^4/s) / (0.00037 m) v2 = 0.206 m^3/s But my answer is incorrect. Do I need to apply another equation? Or did I mess up somewhere? Please help.