8.45 Water flow through a horizontal 60 mm diameter galvanized iron pipe at a rate of Q = 0.02 m³/s. If the pressure drop is 135 kPa per 10 m of pipe, do you think the pipe is (a) a new pipe, (b) an old pipe with a somewhat increased roughness due to aging, or (c) very old pipe that is partially clogged by deposits? Justify your

8.45 Water flow through a horizontal 60 mm diameter galvanized iron pipe at a rate of Q = 0.02 m³/s. If the pressure drop is 135 kPa per 10 m of pipe, do you think the pipe is (a) a new pipe, (b) an old pipe with a somewhat increased roughness due to aging, or (c) very old pipe that is partially clogged by deposits? Justify your