Please give me the formula to solve this.
Extracted text: The rate of flow of water through a pipe of length 2000 m and diameter 1mis 2 m'/s. At the end of the pipe a nozzle of outside diameter 300 mm is fitted. Find the power transmitted through the nozzle if the head of water at inlet of the pipe is 200 m and co-efficient of friction for pipe is 0.01.