Cold water ( at 4C ) flows up through the vertical pipe that is connected to the expansion joint as shown in the figure. Two open-ended manometers are attached to the pipe on either side of the expansion to indicate the respective pressure values. a) Using the height of liquid in the bottom manometer, calculate the absolute pressure (in Pa units) at point A in the system. (2 marks) b) Assuming that both the frictional and minor losses through the expansion are negligible, write the correct form of the Bernoulli equation (in 'energy per mass' units) that describes the flow along the streamline between points A and B. (1 mark) c) If the volumetric flow rate of water through the pipe is 0.02m3/s, calculate the height of liquid (in mm units) in the top manometer (i.e. at point B). (4 marks)