2) (challenge) Water flows through a horizontal pipe similar to the pipe in DL. It enters the pipe at point (1), then leaves the pipe at point (2), which is open to the atmosphere. The height of the water in each vertical column is below. Now suppose that the length of this pipe is doubled. The pressure at point (1) is the same as before. Point (2) is still open to the atmosphere. Water is again allowed to flow from point (1) to point (2). Assume resistance changes linearly with pipe length. open to air a) How does the resistance of the longer pipe compare to that of the shorter one? (Think in terms of thermal energy and friction.) b) Compare the flow rates in the two pipes. If they are different, by how much? Explain your answer and show your reasoning. c) Fill in the water levels in each of the vertical columns in the pipe whose length has been doubled, in the diagram below. Be clear and accurate in drawing each water level. open to air