QUESTIONS AL A2 不 h = = > Q1. (20 marks) Water flows through the horizontal pipe shown in Fig. 1with Aj = 40.0 cm², A2 =

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QUESTIONS AL A2 不 h = = > Q1. (20 marks) Water flows through the horizontal pipe shown in Fig. 1with Aj = 40.0 cm², A2 = 10.0 cm² and the flow speed at Aj is 1.50 m/s. Given: Water density: 1.00 × 103 kg/m². Find (a) the volume flow rate and the flow speed at A2, (b) the difference in height h between the mercury columns in the U-shaped tube. Fig. 1 250 m in Q2. (10 marks) A piece of metal of a long bridge has initial length 250 m. It is broken in two pieces of equal length when heated by 20°C (Fig. 2). The coefficient of linear expansion of this metal is 12 x 10-6 (°C)*?. Compute the height h to which the pieces rise when they bend. Fig. 2 PlkPa)