2a: Building on your answers to the previous questions, can you explain why the water level is higher in the left most tube than in the middle tube?             (HINT) Middle tube has faster flowing water due to thinner pipe. Faster water means that there is less pressure. b:Can you explain why, once the water starts flowing, the water level in all 3tubes lowers over time? Hint: revisit the setup of the experiment - where is the water flowing from?             (HINT) The Initial pressure drops over time: As water level in source tank drops, there’s less weight to supply the pressure

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Variation of pressure

From the equation of pressure, pressure is directly proportional to the applied force.