Part A Water at a gauge pressure of P = 4.2 atm at street level flows into an Calculate the flow velocity in the pipe on the top floor. office building at a speed of 0.92 m/s through a pipe 5.8 cm in diameter. Express your answer to two significant figures and include the appropriate units. The pipe tapers down to 2.8 cm in diameter by the top floor, 16 m above (Figure 1). Assume no branch pipes and ignore viscosity. HA ? Utop Value Units Figure