Water is circulating during a set of pipes in a closed heating system (think radiators) for a two floor house. On the first floor, the measure pressure of the water is 3.4 x 105 Pa and its speed is 2.1 m/s. On the second floor, which is 4.0 m higher, the speed of the water is 3.7 m/s because the size of the pipes has changed. What is the measure pressure of the water on the second floor?