Water is conveyed from street level to the top floor of a building located 20 m above the street.The pipe diameter is 50 mm at ground level and 25 mm at top floor of building. At street level measured flow velocity is 0.06 m/sec and gauge pressure is 3.8 atm. Ignore friction losses. a) Calculate flow velocity (m/sec) in pipe on top floor b) Calculate absolute pressure (kPa) in pipe on top floor